1) An electromagnetic wave is a result of electric and magnetic fields acting together. T 1)

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "1) An electromagnetic wave is a result of electric and magnetic fields acting together. T 1)"

Transcription

1 Exam 3 Review Name TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) An electromagnetic wave is a result of electric and magnetic fields acting together. T 1) 2) Electromagnetic waves do not require a medium to be transmitted. T 2) 3) Accelerated charges radiate electromagnetic waves. T 3) 4) The ratio of the electric field to the magnetic field in the electromagnetic wave is the speed of the light. T 4) 5) The intensity of the radiation field of an antenna is inversely proportional to the distance from the antenna. F 5) 6) The reflection of light from a rough surface is called specular reflection. F 6) 7) A concave mirror is also known as a diverging mirror. F 7) 8) Magnification is positive for inverted images. F 8) 9) The difference between a camera and the human eye is that a camera utilizes a fixed focal length lens and the eye does not. T 9) 10) A convex lens always produces a virtual image. F 10) 11) Farsightedness can be corrected with a converging lens. T 11) 12) The far point of a normal human eye is infinity. T 12) 13) A magnifying glass can be made from a diverging lens. F 13) 14) The focal length of the objective of a telescope is much longer than the focal length of the eyepiece. T 14) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 15) In an electromagnetic wave the E and B fields are oriented such that 15) A) they are parallel to one another and parallel to the direction of wave propagation. B) they are perpendicular to one another and perpendicular to the direction of wave propagation.xxx C) they are parallel to one another and perpendicular to the direction of wave propagation. D) they are perpendicular to one another and parallel to the direction of wave propagation. E) None of the above answers is correct. 1

2 16) The direction of propagation of electromagnetic waves is given by the 16) A) right and left hand rules. B) right hand rule.xxx C) left hand rule. D) None of the other answers given is correct. 17) Which one of the following is not an electromagnetic wave? 17) A) UV B) sound wavesxxx C) radio waves D) gamma rays E) infrared 18) The energy density of an electromagnetic wave is 18) A) entirely in the magnetic field. B) 1/4 in the electric field and 3/4 in the magnetic field. C) equally divided between the magnetic and the electric fields.xxx D) 1/4 in the magnetic field and 3/4 in the electric field. E) entirely in the electric field. 19) The distance between the two planets is m. How much time would the light signal take to go from one planet to the other? A) sxxx B) s C) s D) s E) None of the other answers is correct. 19) FIGURE ) For an xyz-coordinate system shown in Figure 25-2, if the E-vector is in the +z direction, and the B-vector is in the +x direction, what is the direction of propagation of the electromagnetic waves? A) +yxxx B) +x C) -x D) -y E) +z 20) 2

3 21) A car is approaching a radio station at a speed of 25.0 m/s. If the radio station broadcasts at a frequency of 74.5 MHz, what change in frequency does the driver observe? A) 64.5 Hz B) 6.21 HzXXX C) 98.3 Hz D) 726 Hz E) 67.0 Hz 22) A Doppler weather radar operates at a frequency of 3.40 GHz. The wave from this radar system reflects from an approaching weather system moving with a speed of 39.0 m/s. What is the difference in frequency between the outgoing and returning waves? A) 351 Hz B) 419 Hz C) 670 Hz D) 322 Hz E) 442 HzXXX 21) 22) 23) How far does a beam of light travel in one full year? 23) A) m B) m C) m D) mxxx E) m 24) A laser beam takes 24 ms to be reflected from the surface of a planet. How far from the laser source is this planet's surface? A) m B) m C) mxxx D) m E) m 25) The maximum value of the electric field in an electromagnetic wave is 1.5 V/m. What is the maximum value of the magnetic field associated with this wave? A) 4.0 nt B) 7.0 nt C) 6.0 nt D) 5.0 nt E) 3.0 nt 24) 25) 26) The average intensity of the sunlight in Miami, Florida, is 1060 W/m2. What is the average value of the force exerted on a 16 m2 surface that absorbs this light? A) N B) N C) NXXX D) N/m2 E) N 26) 3

4 27) An mW laser beam emits a cylindrical beam of light mm in diameter. What is the maximum value of the magnetic field? A) T B) TXXX C) T D) T E) T 28) A 60.0 W light bulb radiates light uniformly in all different directions. What is the value of E at a distance of m from the bulb? A) 106 N/CXXX B) 162 N/C C) 52.9 N/C D) 212 N/C E) 82.1 N/C 27) 28) 29) The wavelength of a certain portion of microwaves is 40 mm. What is its frequency? 29) A) 40 GHz B) 0.75 GHz C) 7.5 GHzXXX D) 4.0 GHz E) 75 GHz 30) Which of the following sets of characteristics describes the image formed by a plane mirror? 30) A) virtual and inverted B) real and inverted C) real and upright D) virtual and uprightxxx E) All of the previous statements can be correct. 31) The perpendicular distance from the center of curvature to a spherical mirror is called 31) A) the center of curvature. B) twice the radius of curvature. C) the focal length. D) the perpendicular axis. E) the radius of curvature.xxx 32) A beam of light that is parallel to the principal axis is incident on a concave mirror. What happens to the reflected beam of light? A) It also is parallel to the principal axis. B) It passes through the center of curvature of the mirror. C) It is perpendicular to the principal axis. D) It passes through the focal point of the mirror.xxx E) It passes between the focal point and the center of curvature of the mirror. 32) 4

5 33) A beam of white light goes through dispersion in a prism. The color that bends the most is 33) A) yellow. B) violet.xxx C) red. D) green. E) orange. 34) The critical angle for a beam of light passing from water into air is This means that all light rays with an angle of incidence greater than this angle will be A) totally polarized. B) partially reflected and partially transmitted. C) totally reflected.xxx D) totally transmitted. E) absorbed. 34) 35) Which of the following is a correct statement? 35) A) A convex mirror always produces a virtual image.xxx B) A concave mirror always produces a virtual image. C) A convex mirror always produces a real image. D) A concave mirror always produces a real image. E) All of the previous statements can be correct. 36) An object is located 3.8 m in front of a plane mirror. The image formed by the mirror appears to be 36) A) 1.9 m behind the mirror's surface. B) 3.8 m behind the mirror's surface.xxx C) on the mirror's surface. D) 1.9 m in front of the mirror. E) 3.8 m in front of the mirror. 37) A ray of light strikes a plane mirror perpendicular to the mirror. What is the angle of reflection? 37) A) 360 B) 270 C) 0 XXX D) 180 E) 90 38) The reflecting surfaces of two plane mirrors are perpendicular to each other. How many images of himself will a person standing at a certain distance from the intersection of these mirrors see? A) 3XXX B) 4 C) 5 D) 2 E) 1 38) 39) The focal length of a concave mirror is 20 cm. What is its radius of curvature? 39) A) 10 cm B) -20 cm C) 20 cm D) 40 cmxxx E) -40 cm 40) An object 4.0 cm in height is placed 8.0 cm in front of a concave mirror with a focal length of 10.0 cm. What is the position of its image in relation to the mirror and what are its characteristics? A) 40.0 cm on the other side of mirror, real, 6.0 times bigger B) 10.0 cm on the other side of mirror, virtual, 10.0 times bigger C) 10.0 cm on the same side of mirror, real, 6.0 times bigger D) 40.0 cm on the other side of mirror, virtual, 5.0 times biggerxxx E) 18.0 cm on the same side of mirror, virtual, 2.25 times bigger 40) 5

6 41) John's face is 20 cm in front of a concave shaving mirror of focal length 30 cm. How large an image does he observe? A) half as large as his face B) four times as large as his face C) three times as large as his facexxx D) of the same size as his face E) twice as large as his face 42) An object is placed 50 cm in front of a concave mirror with a focal length of 25 cm. What is the magnification? A) -1.0XXX B) -1.5 C) -2.0 D) -2.5 E) ) 42) 43) The index of refraction of a certain medium is 1.5. What is the speed of light in that medium? 43) A) m/s B) m/sxxx C) m/s D) m/s E) m/s 44) A ray of light in air enters a glass surface at right angles to the surface. What is the angle of refraction? A) 360 B) 90 C) 0 XXX D) 180 E) ) 45) An object is placed 10 cm from a convex lens of focal length 20 cm. What is the magnification? 45) A) 2.0XXX B) 0.50 C) 2.5 D) 1.0 E) ) A beam of light in water (n = 1.33) enters a glass slab (n = 1.50) at an angle of incidence of What is the angle of refraction? A) 60.0 B) 27.5 C) 50.2 XXX D) 39.8 E) ) A 4.0-cm-tall object is placed 50.0 cm from a diverging lens of focal length 25.0 cm. What is the nature and location of the image? A) A virtual image, 1.3 cm tall, 16.7 cm same side as the objectxxx B) A virtual image, 4.0 cm tall, 20 cm other side of the object C) A real image, 1.3 cm tall, 16.7 cm same side as the object D) A real image, 4.0 cm tall, 20 cm other side of the object E) A virtual image, 2.0 cm tall, 10 cm other side of the object 46) 47) 48) The length of time the shutter is open when the film is exposed in a camera is determined by the 48) A) focal length of the lens.. B) diameter of the aperture. C) f-stop. D) shutter speed.xxx E) focusing. 6

7 49) The back of a person's eye is too close to the lens. This person is suffering from 49) A) spherical aberration. B) chromatic aberration. C) farsightedness.xxx D) nearsightedness. E) astigmatism. 50) You have a choice between two lenses of focal lengths fa and fb = 2fa to use as objective lens in building a compound microscope. If the magnification you obtain using lens A is Ma, what will be the magnification when using lens B? A) Mb = 8Ma B) Mb = Ma/2XXX C) Mb = 4Ma D) Mb = Ma/4 E) Mb = 2Ma 50) 51) Which one of the following is not a characteristic of a simple two-lens astronomical refracting telescope? A) The final image is virtual. B) The angular size of the final image is larger than that of the object. C) The objective forms a virtual image.xxx D) The final image is inverted. 51) 52) Do mirrors suffer from chromatic aberration? 52) A) Yes, every optical instrument suffers from it. B) No, because the angle of reflection is always equal to the angle of incidence.xxx C) Yes, because of their specular dispersion. D) None of the previous choices is correct. 53) The deviation of a lens from its ideal behavior is referred to as 53) A) chromatic aberration. B) spherical aberration. C) achromatic aberration. D) an aberration.xxx E) None of the other choices is correct. 54) What type of lens is a magnifying glass? 54) A) convergingxxx B) diverging C) cylindrical D) achromatic E) spherical 55) What is the focal length of the corrective contact lens needed by a nearsighted person whose far point is 60 cm? A) +60 cm B) +130 cm C) -30 cm D) -60 cmxxx E) +30 cm 55) 7

8 56) A camera lens has a focal length of 50.0 mm and an aperture setting of What is the aperture diameter of this lens? A) 13.6 mm B) 14.2 mm C) 15.0 mm D) 12.5 mmxxx E) 10.1 mm 56) 57) What is the power of the combined lenses with individual powers of 8.0 diopters and 4.0 diopters? 57) A) 12 dioptersxxx B) 32 diopters C) 2.0 diopters D) 4.0 diopters E) 24 diopters 58) A nearsighted person has a far point that is 4.2 m from his eyes. What focal length lenses must he use in his contact lenses to allow him to focus on distant objects? A) 4.2 m B) -4.2 mxxx C) -5.2 m D) 5.2 m E) 4.8 m 59) What power contact lens must be used to correct the vision of a nearsighted person whose far point is 40 cm? A) 4.0 diopters B) -2.5 dioptersxxx C) -3.6 diopters D) -4.0 diopters E) 2.5 diopters 60) A person can read the newspaper when it is held at 60 cm from his eyes. What should the focal length of his contact lenses be to allow him to read the newspaper comfortably at a distance of 30 cm? A) +90 cm B) -30 cm C) +60 cmxxx D) -60 cm E) +30 cm 61) A magnifying glass produces an angular magnification of 7. What is the focal length of this lens if a person whose near point is 28 cm reads a book using this magnifying glass? A) 4 cmxxx B) 3 cm C) 2 cm D) 6 cm E) 5 cm 62) What is the magnification of a magnifying glass of focal length 4.0 cm if the image is to be viewed by a relaxed eye with a near point of 25 cm? A) 4.0 B) 2.0 C) 3.0 D) 3.6 E) 6.3XXX 63) A magnifying glass uses a converging lens with a refractive power of 20 diopters. What is the magnification if the image is to be viewed by a relaxed eye with a near point of 25 cm? A) 1.0 B) 3.0 C) 5.0XXX D) 4.0 E) ) 59) 60) 61) 62) 63) 8

9 64) The length of a telescope is 2.20 m and the focal length of the eyepiece is 1.9 cm. What is the focal length of the objective? A) 111 cm B) 41 cm C) 218 cmxxx D) 16 cm E) 45 cm 65) The length of the telescope is 1.60 m and it has a magnification of What is the focal length of the objective? A) 96.0 cm B) 128 cm C) 157 cmxxx D) 100 cm E) 60.0 cm 66) The distance between the object and the eyepiece of a compound microscope is 25.0 cm. The focal length of its objective lens is cm and the eyepiece has a focal length of 2.60 cm. What is the total magnification of the microscope when used by the person of normal eyesight? A) -772 B) -1070XXX C) -520 D) -204 E) ) The focal lengths of the objective and the eyepiece in a microscope are 0.29 cm and 2.5 cm, respectively. An object is placed 0.3 cm from the objective. The image of this object is viewed with the eyepiece adjusted for minimum eyestrain. What is the distance between the objective and the eyepiece? A) 11.5 cm B) 9.85 cm C) 11.2 cmxxx D) 10.1 cm E) 10.4 cm 64) 65) 66) 67) 9

Lecture Outline Chapter 27. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc.

Lecture Outline Chapter 27. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc. Lecture Outline Chapter 27 Physics, 4 th Edition James S. Walker Chapter 27 Optical Instruments Units of Chapter 27 The Human Eye and the Camera Lenses in Combination and Corrective Optics The Magnifying

More information

Final Reg Optics Review SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.

Final Reg Optics Review SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Final Reg Optics Review 1) How far are you from your image when you stand 0.75 m in front of a vertical plane mirror? 1) 2) A object is 12 cm in front of a concave mirror, and the image is 3.0 cm in front

More information

OPTICS DIVISION B. School/#: Names:

OPTICS DIVISION B. School/#: Names: OPTICS DIVISION B School/#: Names: Directions: Fill in your response for each question in the space provided. All questions are worth two points. Multiple Choice (2 points each question) 1. Which of the

More information

Person s Optics Test KEY SSSS

Person s Optics Test KEY SSSS Person s Optics Test KEY SSSS 2017-18 Competitors Names: School Name: All questions are worth one point unless otherwise stated. Show ALL WORK or you may not receive credit. Include correct units whenever

More information

Chapter 26. The Refraction of Light: Lenses and Optical Instruments

Chapter 26. The Refraction of Light: Lenses and Optical Instruments Chapter 26 The Refraction of Light: Lenses and Optical Instruments 26.1 The Index of Refraction Light travels through a vacuum at a speed c=3. 00 10 8 m/ s Light travels through materials at a speed less

More information

Chapter 29/30. Wave Fronts and Rays. Refraction of Sound. Dispersion in a Prism. Index of Refraction. Refraction and Lenses

Chapter 29/30. Wave Fronts and Rays. Refraction of Sound. Dispersion in a Prism. Index of Refraction. Refraction and Lenses Chapter 29/30 Refraction and Lenses Refraction Refraction the bending of waves as they pass from one medium into another. Caused by a change in the average speed of light. Analogy A car that drives off

More information

L 32 Light and Optics [2] The rainbow. Why is it a rain BOW? Atmospheric scattering. Different colors are refracted (bent) by different amounts

L 32 Light and Optics [2] The rainbow. Why is it a rain BOW? Atmospheric scattering. Different colors are refracted (bent) by different amounts L 32 Light and Optics [2] Measurements of the speed of light The bending of light refraction Total internal reflection Dispersion Dispersion Rainbows Atmospheric scattering Blue sky and red sunsets Mirrors

More information

There is a range of distances over which objects will be in focus; this is called the depth of field of the lens. Objects closer or farther are

There is a range of distances over which objects will be in focus; this is called the depth of field of the lens. Objects closer or farther are Chapter 25 Optical Instruments Some Topics in Chapter 25 Cameras The Human Eye; Corrective Lenses Magnifying Glass Telescopes Compound Microscope Aberrations of Lenses and Mirrors Limits of Resolution

More information

Chapter 34 Geometric Optics

Chapter 34 Geometric Optics Chapter 34 Geometric Optics Lecture by Dr. Hebin Li Goals of Chapter 34 To see how plane and curved mirrors form images To learn how lenses form images To understand how a simple image system works Reflection

More information

Geometric Optics. Ray Model. assume light travels in straight line uses rays to understand and predict reflection & refraction

Geometric Optics. Ray Model. assume light travels in straight line uses rays to understand and predict reflection & refraction Geometric Optics Ray Model assume light travels in straight line uses rays to understand and predict reflection & refraction General Physics 2 Geometric Optics 1 Reflection Law of reflection the angle

More information

LIGHT REFLECTION AND REFRACTION

LIGHT REFLECTION AND REFRACTION LIGHT REFLECTION AND REFRACTION 1. List four properties of the image formed by a plane mirror. Properties of image formed by a plane mirror: 1. It is always virtual and erect. 2. Its size is equal to that

More information

Chapter 23. Light Geometric Optics

Chapter 23. Light Geometric Optics Chapter 23. Light Geometric Optics There are 3 basic ways to gather light and focus it to make an image. Pinhole - Simple geometry Mirror - Reflection Lens - Refraction Pinhole Camera Image Formation (the

More information

Assignment X Light. Reflection and refraction of light. (a) Angle of incidence (b) Angle of reflection (c) principle axis

Assignment X Light. Reflection and refraction of light. (a) Angle of incidence (b) Angle of reflection (c) principle axis Assignment X Light Reflection of Light: Reflection and refraction of light. 1. What is light and define the duality of light? 2. Write five characteristics of light. 3. Explain the following terms (a)

More information

Converging and Diverging Surfaces. Lenses. Converging Surface

Converging and Diverging Surfaces. Lenses. Converging Surface Lenses Sandy Skoglund 2 Converging and Diverging s AIR Converging If the surface is convex, it is a converging surface in the sense that the parallel rays bend toward each other after passing through the

More information

c v n = n r Sin n c = n i Refraction of Light Index of Refraction Snell s Law or Refraction Example Problem Total Internal Reflection Optics

c v n = n r Sin n c = n i Refraction of Light Index of Refraction Snell s Law or Refraction Example Problem Total Internal Reflection Optics Refraction is the bending of the path of a light wave as it passes from one material into another material. Refraction occurs at the boundary and is caused by a change in the speed of the light wave upon

More information

Exam 4. Name: Class: Date: Multiple Choice Identify the choice that best completes the statement or answers the question.

Exam 4. Name: Class: Date: Multiple Choice Identify the choice that best completes the statement or answers the question. Name: Class: Date: Exam 4 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Mirages are a result of which physical phenomena a. interference c. reflection

More information

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A plane mirror is placed on the level bottom of a swimming pool that holds water (n =

More information

PHYS 160 Astronomy. When analyzing light s behavior in a mirror or lens, it is helpful to use a technique called ray tracing.

PHYS 160 Astronomy. When analyzing light s behavior in a mirror or lens, it is helpful to use a technique called ray tracing. Optics Introduction In this lab, we will be exploring several properties of light including diffraction, reflection, geometric optics, and interference. There are two sections to this lab and they may

More information

Image Formation. Light from distant things. Geometrical optics. Pinhole camera. Chapter 36

Image Formation. Light from distant things. Geometrical optics. Pinhole camera. Chapter 36 Light from distant things Chapter 36 We learn about a distant thing from the light it generates or redirects. The lenses in our eyes create images of objects our brains can process. This chapter concerns

More information

Chapter 34 Geometric Optics (also known as Ray Optics) by C.-R. Hu

Chapter 34 Geometric Optics (also known as Ray Optics) by C.-R. Hu Chapter 34 Geometric Optics (also known as Ray Optics) by C.-R. Hu 1. Principles of image formation by mirrors (1a) When all length scales of objects, gaps, and holes are much larger than the wavelength

More information

Chapter 34: Geometrical Optics (Part 2)

Chapter 34: Geometrical Optics (Part 2) Chapter 34: Geometrical Optics (Part 2) Brief review Optical instruments Camera Human eye Magnifying glass Telescope Microscope Optical Aberrations Phys Phys 2435: 22: Chap. 34, 31, Pg 1 The Lens Equation

More information

Dr. Todd Satogata (ODU/Jefferson Lab) Monday, April

Dr. Todd Satogata (ODU/Jefferson Lab)  Monday, April University Physics 227N/232N Mirrors and Lenses Homework Optics 2 due Friday AM Quiz Friday Optional review session next Monday (Apr 28) Bring Homework Notebooks to Final for Grading Dr. Todd Satogata

More information

Lecture 17. Image formation Ray tracing Calculation. Lenses Convex Concave. Mirrors Convex Concave. Optical instruments

Lecture 17. Image formation Ray tracing Calculation. Lenses Convex Concave. Mirrors Convex Concave. Optical instruments Lecture 17. Image formation Ray tracing Calculation Lenses Convex Concave Mirrors Convex Concave Optical instruments Image formation Laws of refraction and reflection can be used to explain how lenses

More information

Information for Physics 1201 Midterm 2 Wednesday, March 27

Information for Physics 1201 Midterm 2 Wednesday, March 27 My lecture slides are posted at http://www.physics.ohio-state.edu/~humanic/ Information for Physics 1201 Midterm 2 Wednesday, March 27 1) Format: 10 multiple choice questions (each worth 5 points) and

More information

SUBJECT: PHYSICS. Use and Succeed.

SUBJECT: PHYSICS. Use and Succeed. SUBJECT: PHYSICS I hope this collection of questions will help to test your preparation level and useful to recall the concepts in different areas of all the chapters. Use and Succeed. Navaneethakrishnan.V

More information

CHAPTER 18 REFRACTION & LENSES

CHAPTER 18 REFRACTION & LENSES Physics Approximate Timeline Students are expected to keep up with class work when absent. CHAPTER 18 REFRACTION & LENSES Day Plans for the day Assignments for the day 1 18.1 Refraction of Light o Snell

More information

Chapter 34: Geometric Optics

Chapter 34: Geometric Optics Chapter 34: Geometric Optics It is all about images How we can make different kinds of images using optical devices Optical device example: mirror, a piece of glass, telescope, microscope, kaleidoscope,

More information

mirrors and lenses PHY232 Remco Zegers Room W109 cyclotron building

mirrors and lenses PHY232 Remco Zegers Room W109 cyclotron building mirrors and lenses PHY232 Remco Zegers zegers@nscl.msu.edu Room W109 cyclotron building http://www.nscl.msu.edu/~zegers/phy232.html quiz (extra credit) a ray of light moves from air to a material with

More information

Phys214 Fall 2004 Midterm Form A

Phys214 Fall 2004 Midterm Form A 1. A clear sheet of polaroid is placed on top of a similar sheet so that their polarizing axes make an angle of 30 with each other. The ratio of the intensity of emerging light to incident unpolarized

More information

Chapter 2 - Geometric Optics

Chapter 2 - Geometric Optics David J. Starling Penn State Hazleton PHYS 214 The human eye is a visual system that collects light and forms an image on the retina. The human eye is a visual system that collects light and forms an image

More information

The Optics of Mirrors

The Optics of Mirrors Use with Text Pages 558 563 The Optics of Mirrors Use the terms in the list below to fill in the blanks in the paragraphs about mirrors. reversed smooth eyes concave focal smaller reflect behind ray convex

More information

PHYS:1200 LECTURE 31 LIGHT AND OPTICS (3)

PHYS:1200 LECTURE 31 LIGHT AND OPTICS (3) 1 PHYS:1200 LECTURE 31 LIGHT AND OPTICS (3) In lecture 30, we applied the law of reflection to understand how images are formed using plane and curved mirrors. In this lecture we will use the law of refraction

More information

Lenses- Worksheet. (Use a ray box to answer questions 3 to 7)

Lenses- Worksheet. (Use a ray box to answer questions 3 to 7) Lenses- Worksheet 1. Look at the lenses in front of you and try to distinguish the different types of lenses? Describe each type and record its characteristics. 2. Using the lenses in front of you, look

More information

always positive for virtual image

always positive for virtual image Point to be remembered: sign convention for Spherical mirror Object height, h = always positive Always +ve for virtual image Image height h = Always ve for real image. Object distance from pole (u) = always

More information

13. A beam of yellow light and a beam of magenta light are both shined on a white wall. What color does the wall appear to be?

13. A beam of yellow light and a beam of magenta light are both shined on a white wall. What color does the wall appear to be? School Team Number Optics Proceed to the laser shoot when your team number is called. Physical Optics (30%) 1. What are the four colors used in the CMYK color model? (2 points) 2. Muscae Volitantes are

More information

Chapter 23. Mirrors and Lenses

Chapter 23. Mirrors and Lenses Chapter 23 Mirrors and Lenses Mirrors and Lenses The development of mirrors and lenses aided the progress of science. It led to the microscopes and telescopes. Allowed the study of objects from microbes

More information

Chapter 36. Image Formation

Chapter 36. Image Formation Chapter 36 Image Formation Real and Virtual Images Real images can be displayed on screens Virtual Images can not be displayed onto screens. Focal Length& Radius of Curvature When the object is very far

More information

Section 1: Sound. Sound and Light Section 1

Section 1: Sound. Sound and Light Section 1 Sound and Light Section 1 Section 1: Sound Preview Key Ideas Bellringer Properties of Sound Sound Intensity and Decibel Level Musical Instruments Hearing and the Ear The Ear Ultrasound and Sonar Sound

More information

CHAPTER 34. Optical Images

CHAPTER 34. Optical Images CHAPTER 34 1* Can a virtual image be photographed? Yes. Note that a virtual image is seen because the eye focuses the diverging rays to form a real image on the retina. Similarly, the camera lens can focus

More information

PHYSICS 202 EXAM 3 March 31, 2005

PHYSICS 202 EXAM 3 March 31, 2005 PHYSICS 202 EXAM 3 March 31, 2005 NAME: SECTION: 517 518 519 520 Note: 517 Recitation Mon 4:10 518 Recitation Wed 10:20 519 Recitation Wed 8:00 520 Recitation Mon 1:50 There are a total of 11 problems

More information

Exam 4--PHYS 102--S15

Exam 4--PHYS 102--S15 Name: Class: Date: Exam 4--PHYS 102--S15 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A mirror produces an upright image. The object is 2 cm high; the

More information

University of Rochester Department of Physics and Astronomy Physics123, Spring Homework 5 - Solutions

University of Rochester Department of Physics and Astronomy Physics123, Spring Homework 5 - Solutions Problem 5. University of Rochester Department of Physics and Astronomy Physics23, Spring 202 Homework 5 - Solutions An optometrist finds that a farsighted person has a near point at 25 cm. a) If the eye

More information

Name. Light Chapter Summary Cont d. Refraction

Name. Light Chapter Summary Cont d. Refraction Page 1 of 17 Physics Week 12(Sem. 2) Name Light Chapter Summary Cont d with a smaller index of refraction to a material with a larger index of refraction, the light refracts towards the normal line. Also,

More information

Rutgers Analytical Physics 750:228, Spring 2013 ( RUPHYS228S13 ) My Courses Course Settings University Physics with Modern Physics, 13e Young/Freedman

Rutgers Analytical Physics 750:228, Spring 2013 ( RUPHYS228S13 ) My Courses Course Settings University Physics with Modern Physics, 13e Young/Freedman Signed in as RONALD GILMAN, Instructor Help Sign Out Rutgers Analytical Physics 750:228, Spring 2013 ( RUPHYS228S13 ) My Courses Course Settings University Physics with Modern Physics, 13e Young/Freedman

More information

Division C Optics KEY Captains Exchange

Division C Optics KEY Captains Exchange Division C Optics KEY 2017-2018 Captains Exchange 1.) If a laser beam is reflected off a mirror lying on a table and bounces off a nearby wall at a 30 degree angle, what was the angle of incidence of the

More information

a) (6) How much time in milliseconds does the signal require to travel from the satellite to the dish antenna?

a) (6) How much time in milliseconds does the signal require to travel from the satellite to the dish antenna? General Physics II Exam 3 - Chs. 22 25 - EM Waves & Optics April, 203 Name Rec. Instr. Rec. Time For full credit, make your work clear. Show formulas used, essential steps, and results with correct units

More information

AP Physics Problems -- Waves and Light

AP Physics Problems -- Waves and Light AP Physics Problems -- Waves and Light 1. 1974-3 (Geometric Optics) An object 1.0 cm high is placed 4 cm away from a converging lens having a focal length of 3 cm. a. Sketch a principal ray diagram for

More information

Chapter 23 Study Questions Name: Class:

Chapter 23 Study Questions Name: Class: Chapter 23 Study Questions Name: Class: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. When you look at yourself in a plane mirror, you

More information

LAB 12 Reflection and Refraction

LAB 12 Reflection and Refraction Cabrillo College Physics 10L Name LAB 12 Reflection and Refraction Read Hewitt Chapters 28 and 29 What to learn and explore Please read this! When light rays reflect off a mirror surface or refract through

More information

Light and Applications of Optics

Light and Applications of Optics UNIT 4 Light and Applications of Optics Topic 4.1: What is light and how is it produced? Topic 4.6: What are lenses and what are some of their applications? Topic 4.2 : How does light interact with objects

More information

Physics 228 Lecture 3. Today: Spherical Mirrors Lenses.

Physics 228 Lecture 3. Today: Spherical Mirrors Lenses. Physics 228 Lecture 3 Today: Spherical Mirrors Lenses www.physics.rutgers.edu/ugrad/228 a) Santa as he sees himself in a mirrored sphere. b) Santa as he sees himself in a flat mirror after too much eggnog.

More information

Activity 6.1 Image Formation from Spherical Mirrors

Activity 6.1 Image Formation from Spherical Mirrors PHY385H1F Introductory Optics Practicals Day 6 Telescopes and Microscopes October 31, 2011 Group Number (number on Intro Optics Kit):. Facilitator Name:. Record-Keeper Name: Time-keeper:. Computer/Wiki-master:..

More information

Lecture PowerPoint. Chapter 25 Physics: Principles with Applications, 6 th edition Giancoli

Lecture PowerPoint. Chapter 25 Physics: Principles with Applications, 6 th edition Giancoli Lecture PowerPoint Chapter 25 Physics: Principles with Applications, 6 th edition Giancoli 2005 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for the

More information

Reflection and Refraction of Light

Reflection and Refraction of Light Reflection and Refraction of Light Physics 102 28 March 2002 Lecture 6 28 Mar 2002 Physics 102 Lecture 6 1 Light waves and light rays Last time we showed: Time varying B fields E fields B fields to create

More information

Refraction by Spherical Lenses by

Refraction by Spherical Lenses by Page1 Refraction by Spherical Lenses by www.examfear.com To begin with this topic, let s first know, what is a lens? A lens is a transparent material bound by two surfaces, of which one or both the surfaces

More information

JPN Pahang Physics Module Form 4 Chapter 5 Light. In each of the following sentences, fill in the bracket the appropriate word or words given below.

JPN Pahang Physics Module Form 4 Chapter 5 Light. In each of the following sentences, fill in the bracket the appropriate word or words given below. JPN Pahang Physics Module orm 4 HAPTER 5: LIGHT In each of the following sentences, fill in the bracket the appropriate word or words given below. solid, liquid, gas, vacuum, electromagnetic wave, energy

More information

Instructional Resources/Materials: Light vocabulary cards printed (class set) Enough for each student (See card sort below)

Instructional Resources/Materials: Light vocabulary cards printed (class set) Enough for each student (See card sort below) Grade Level/Course: Grade 7 Life Science Lesson/Unit Plan Name: Light Card Sort Rationale/Lesson Abstract: Light vocabulary building, students identify and share vocabulary meaning. Timeframe: 10 to 20

More information

Introduction. Geometrical Optics. Milton Katz State University of New York. VfeWorld Scientific New Jersey London Sine Singapore Hong Kong

Introduction. Geometrical Optics. Milton Katz State University of New York. VfeWorld Scientific New Jersey London Sine Singapore Hong Kong Introduction to Geometrical Optics Milton Katz State University of New York VfeWorld Scientific «New Jersey London Sine Singapore Hong Kong TABLE OF CONTENTS PREFACE ACKNOWLEDGMENTS xiii xiv CHAPTER 1:

More information

LIGHT REFLECTION AND REFRACTION

LIGHT REFLECTION AND REFRACTION LIGHT REFLECTION AND REFRACTION REFLECTION OF LIGHT A highly polished surface, such as a mirror, reflects most of the light falling on it. Laws of Reflection: (i) The angle of incidence is equal to the

More information

E) all of the above E) 1.9 T

E) all of the above E) 1.9 T 1. The figure shows a uniform magnetic field that is normal to the plane of a conducting loop, which has a resistance R. Which one of the following changes will cause an induced current to flow through

More information

Chapter 34. Images. Copyright 2014 John Wiley & Sons, Inc. All rights reserved.

Chapter 34. Images. Copyright 2014 John Wiley & Sons, Inc. All rights reserved. Chapter 34 Images Copyright 34-1 Images and Plane Mirrors Learning Objectives 34.01 Distinguish virtual images from real images. 34.02 Explain the common roadway mirage. 34.03 Sketch a ray diagram for

More information

Exam 4--PHYS 102--S15

Exam 4--PHYS 102--S15 Name: Class: Date: Exam 4--PHYS 02--S5 Multiple Choice Identify the choice that best completes the statement or answers the question.. A mirror produces an upright image. The object is 8 cm high and to

More information

ii) When light falls on objects, it reflects the light and when the reflected light reaches our eyes then we see the objects.

ii) When light falls on objects, it reflects the light and when the reflected light reaches our eyes then we see the objects. Light i) Light is a form of energy which helps us to see objects. ii) When light falls on objects, it reflects the light and when the reflected light reaches our eyes then we see the objects. iii) Light

More information

Chapter 23. Mirrors and Lenses

Chapter 23. Mirrors and Lenses Chapter 23 Mirrors and Lenses Notation for Mirrors and Lenses The object distance is the distance from the object to the mirror or lens Denoted by p The image distance is the distance from the image to

More information

Question 1: Define the principal focus of a concave mirror. Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from

More information

Image Formation by Lenses

Image Formation by Lenses Image Formation by Lenses Bởi: OpenStaxCollege Lenses are found in a huge array of optical instruments, ranging from a simple magnifying glass to the eye to a camera s zoom lens. In this section, we will

More information

INDEX OF REFRACTION index of refraction n = c/v material index of refraction n

INDEX OF REFRACTION index of refraction n = c/v material index of refraction n INDEX OF REFRACTION The index of refraction (n) of a material is the ratio of the speed of light in vacuuo (c) to the speed of light in the material (v). n = c/v Indices of refraction for any materials

More information

Geometric Optics Practice Problems. Ray Tracing - Draw at least two principle rays and show the image created by the lens or mirror.

Geometric Optics Practice Problems. Ray Tracing - Draw at least two principle rays and show the image created by the lens or mirror. Geometric Optics Practice Problems Ray Tracing - Draw at least two principle rays and show the image created by the lens or mirror. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Practice Problems - Mirrors Classwork

More information

Optics and Telescopes

Optics and Telescopes Optics and Telescopes Properties of Light Law of Reflection - reflection Angle of Incidence = Angle of Law of Refraction - Light beam is bent towards the normal when passing into a medium of higher Index

More information

Lecture 3: Geometrical Optics 1. Spherical Waves. From Waves to Rays. Lenses. Chromatic Aberrations. Mirrors. Outline

Lecture 3: Geometrical Optics 1. Spherical Waves. From Waves to Rays. Lenses. Chromatic Aberrations. Mirrors. Outline Lecture 3: Geometrical Optics 1 Outline 1 Spherical Waves 2 From Waves to Rays 3 Lenses 4 Chromatic Aberrations 5 Mirrors Christoph U. Keller, Leiden Observatory, keller@strw.leidenuniv.nl Lecture 3: Geometrical

More information

Optics B. Science Olympiad North Regional Tournament at the University of Florida DO NOT WRITE ON THIS BOOKLET. THIS IS AN TEST SET.

Optics B. Science Olympiad North Regional Tournament at the University of Florida DO NOT WRITE ON THIS BOOKLET. THIS IS AN TEST SET. Optics B Science Olympiad North Regional Tournament at the University of Florida 1 DO NOT WRITE ON THIS BOOKLET. THIS IS AN TEST SET. Part I: General Body Knowledge Questions 2 1) (3 PTS) For much of the

More information

Lenses. Images. Difference between Real and Virtual Images

Lenses. Images. Difference between Real and Virtual Images Linear Magnification (m) This is the factor by which the size of the object has been magnified by the lens in a direction which is perpendicular to the axis of the lens. Linear magnification can be calculated

More information

Wonders of Light - Part I

Wonders of Light - Part I 6. Wonders of Light - Part I Light : The fastest physical quantity, which is an electromagnetic radiation travelling with the speed of 3 0 8 m/s. SCHOOL SECTION 25 SCIENCE & TECHNOLOGY MT EDUCARE LTD.

More information

INTRODUCTION THIN LENSES. Introduction. given by the paraxial refraction equation derived last lecture: Thin lenses (19.1) = 1. Double-lens systems

INTRODUCTION THIN LENSES. Introduction. given by the paraxial refraction equation derived last lecture: Thin lenses (19.1) = 1. Double-lens systems Chapter 9 OPTICAL INSTRUMENTS Introduction Thin lenses Double-lens systems Aberrations Camera Human eye Compound microscope Summary INTRODUCTION Knowledge of geometrical optics, diffraction and interference,

More information

Lenses. Optional Reading Stargazer: the life and times of the TELESCOPE, Fred Watson (Da Capo 2004).

Lenses. Optional Reading Stargazer: the life and times of the TELESCOPE, Fred Watson (Da Capo 2004). Lenses Equipment optical bench, incandescent light source, laser, No 13 Wratten filter, 3 lens holders, cross arrow, diffuser, white screen, case of lenses etc., vernier calipers, 30 cm ruler, meter stick

More information

Physics for Kids. Science of Light. What is light made of?

Physics for Kids. Science of Light. What is light made of? Physics for Kids Science of Light What is light made of? This is not an easy question. Light has no mass and is not really considered matter. So does it even exist? Of course it does! We couldn't live

More information

Physics 197 Lab 7: Thin Lenses and Optics

Physics 197 Lab 7: Thin Lenses and Optics Physics 197 Lab 7: Thin Lenses and Optics Equipment: Item Part # Qty per Team # of Teams Basic Optics Light Source PASCO OS-8517 1 12 12 Power Cord for Light Source 1 12 12 Ray Optics Set (Concave Lens)

More information

Name: Lab Partner: Section:

Name: Lab Partner: Section: Chapter 10 Thin Lenses Name: Lab Partner: Section: 10.1 Purpose In this experiment, the formation of images by concave and convex lenses will be explored. The application of the thin lens equation and

More information

CHAPTER 3 OPTICAL INSTRUMENTS

CHAPTER 3 OPTICAL INSTRUMENTS 1 CHAPTER 3 OPTICAL INSTRUMENTS 3.1 Introduction The title of this chapter is to some extent false advertising, because the instruments described are the instruments of first-year optics courses, not optical

More information

VISUAL PHYSICS ONLINE DEPTH STUDY: ELECTRON MICROSCOPES

VISUAL PHYSICS ONLINE DEPTH STUDY: ELECTRON MICROSCOPES VISUAL PHYSICS ONLINE DEPTH STUDY: ELECTRON MICROSCOPES Shortly after the experimental confirmation of the wave properties of the electron, it was suggested that the electron could be used to examine objects

More information

Geometric!Op9cs! Reflec9on! Refrac9on!`!Snell s!law! Mirrors!and!Lenses! Other!topics! Thin!Lens!Equa9on! Magnifica9on! Lensmaker s!formula!

Geometric!Op9cs! Reflec9on! Refrac9on!`!Snell s!law! Mirrors!and!Lenses! Other!topics! Thin!Lens!Equa9on! Magnifica9on! Lensmaker s!formula! Geometric!Op9cs! Reflec9on! Refrac9on!`!Snell s!law! Mirrors!and!Lenses! Thin!Lens!Equa9on! Magnifica9on! Lensmaker s!formula! Other!topics! Telescopes! Apertures! Reflec9on! Angle!of!incidence!equals!angle!of!reflec9on!

More information

Physics, Chapter 38: Mirrors and Lenses

Physics, Chapter 38: Mirrors and Lenses University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Robert Katz Publications Research Papers in Physics and Astronomy 1-1958 Physics, Chapter 38: Mirrors and Lenses Henry Semat

More information

10.2 Images Formed by Lenses SUMMARY. Refraction in Lenses. Section 10.1 Questions

10.2 Images Formed by Lenses SUMMARY. Refraction in Lenses. Section 10.1 Questions 10.2 SUMMARY Refraction in Lenses Converging lenses bring parallel rays together after they are refracted. Diverging lenses cause parallel rays to move apart after they are refracted. Rays are refracted

More information

Refraction, Lenses, and Prisms

Refraction, Lenses, and Prisms CHAPTER 16 14 SECTION Sound and Light Refraction, Lenses, and Prisms KEY IDEAS As you read this section, keep these questions in mind: What happens to light when it passes from one medium to another? How

More information

Chapter: Sound and Light

Chapter: Sound and Light Table of Contents Chapter: Sound and Light Section 1: Sound Section 2: Reflection and Refraction of Light Section 3: Mirrors, Lenses, and the Eye Section 4: Light and Color 1 Sound Sound When an object

More information

SECTION 1 QUESTIONS NKB.CO.IN

SECTION 1 QUESTIONS NKB.CO.IN OPTICS SECTION 1 QUESTIONS 1. A diverging beam of light falls on a plane mirror. The image formed by the mirror is a) real, erect b) virtual, inverted c) virtual, erect d) real, inverted. In a pond water

More information

Refraction of Light. Refraction of Light

Refraction of Light. Refraction of Light 1 Refraction of Light Activity: Disappearing coin Place an empty cup on the table and drop a penny in it. Look down into the cup so that you can see the coin. Move back away from the cup slowly until the

More information

Part 1 Investigating Snell s Law

Part 1 Investigating Snell s Law Geometric Optics with Lenses PURPOSE: To observe the refraction of light off through lenses; to investigate the relationship between objects and images; to study the relationship between object distance,

More information

Lecture 19 (Geometric Optics I Plane and Spherical Optics) Physics Spring 2018 Douglas Fields

Lecture 19 (Geometric Optics I Plane and Spherical Optics) Physics Spring 2018 Douglas Fields Lecture 19 (Geometric Optics I Plane and Spherical Optics) Physics 262-01 Spring 2018 Douglas Fields Optics -Wikipedia Optics is the branch of physics which involves the behavior and properties of light,

More information

E X P E R I M E N T 12

E X P E R I M E N T 12 E X P E R I M E N T 12 Mirrors and Lenses Produced by the Physics Staff at Collin College Copyright Collin College Physics Department. All Rights Reserved. University Physics II, Exp 12: Mirrors and Lenses

More information

SCI-PS Light and Optics Pre Assessment Exam not valid for Paper Pencil Test Sessions

SCI-PS Light and Optics Pre Assessment Exam not valid for Paper Pencil Test Sessions SCI-PS Light and Optics Pre Assessment Exam not valid for Paper Pencil Test Sessions [Exam ID:1TL2E1 1 If the angle of incidence is 45, what is the angle of reflection? A 120 B 50 C 90 D 45 2 The wave

More information

GEOMETRICAL OPTICS AND OPTICAL DESIGN

GEOMETRICAL OPTICS AND OPTICAL DESIGN GEOMETRICAL OPTICS AND OPTICAL DESIGN Pantazis Mouroulis Associate Professor Center for Imaging Science Rochester Institute of Technology John Macdonald Senior Lecturer Physics Department University of

More information

Answers to Chapter 11

Answers to Chapter 11 Answers to Chapter 11 11.1 What is Light? #1 Radiation (light) does NOT need a medium to travel through. Conduction needs a solid medium and convection needs liquid or gas medium to travel through. #2

More information

04. REFRACTION OF LIGHT AT CURVED SURFACES

04. REFRACTION OF LIGHT AT CURVED SURFACES CLASS-10 PHYSICAL SCIENCE 04. REFRACTION OF LIGHT AT CURVED SURFACES Questions and Answers *Reflections on Concepts* 1. Write the lens maker s formula and explain the terms in it. A. Lens maker s formula

More information

Human Retina. Sharp Spot: Fovea Blind Spot: Optic Nerve

Human Retina. Sharp Spot: Fovea Blind Spot: Optic Nerve I am Watching YOU!! Human Retina Sharp Spot: Fovea Blind Spot: Optic Nerve Human Vision Optical Antennae: Rods & Cones Rods: Intensity Cones: Color Energy of Light 6 10 ev 10 ev 4 1 2eV 40eV KeV MeV Energy

More information

Chapter 23. Light: Geometric Optics

Chapter 23. Light: Geometric Optics Ch-23-1 Chapter 23 Light: Geometric Optics Questions 1. Archimedes is said to have burned the whole Roman fleet in the harbor of Syracuse, Italy, by focusing the rays of the Sun with a huge spherical mirror.

More information

Waves & Oscillations

Waves & Oscillations Physics 42200 Waves & Oscillations Lecture 33 Geometric Optics Spring 2013 Semester Matthew Jones Aberrations We have continued to make approximations: Paraxial rays Spherical lenses Index of refraction

More information

Page 2. Q1.The figure below shows an incomplete electromagnetic spectrum. A microwaves B C ultraviolet D gamma

Page 2. Q1.The figure below shows an incomplete electromagnetic spectrum. A microwaves B C ultraviolet D gamma Q1.The figure below shows an incomplete electromagnetic spectrum. A microwaves B C ultraviolet D gamma (a) What name is given to the group of waves at the position labelled A in the figure above? Tick

More information

CHAPTER 3LENSES. 1.1 Basics. Convex Lens. Concave Lens. 1 Introduction to convex and concave lenses. Shape: Shape: Symbol: Symbol:

CHAPTER 3LENSES. 1.1 Basics. Convex Lens. Concave Lens. 1 Introduction to convex and concave lenses. Shape: Shape: Symbol: Symbol: CHAPTER 3LENSES 1 Introduction to convex and concave lenses 1.1 Basics Convex Lens Shape: Concave Lens Shape: Symbol: Symbol: Effect to parallel rays: Effect to parallel rays: Explanation: Explanation:

More information