3. What kind of mirror could you use to make image distance less than object distance?
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1 REFLETION REVIEW hoose one o the ollowing to answer questions A response may be used more than once. a. plane mirror e. plane mirror or convex mirror b. concave mirror. concave mirror or convex mirror c. convex mirror g. plane mirror, concave mirror, or convex mirror d. plane mirror or concave mirror h. No mirror 1. What kind o mirror could you use to make images smaller than the object? 2. What kind o mirror can only make an image the same size as the object? 3. What kind o mirror could you use to make image distance less than object distance? 4. What kind o mirror could you use to make image distance greater than object distance? 5. What kind o mirror could you use to make image distance equal to object distance? 6. What kind o mirror could you use to make images in ront o the mirror? 7. What kind o mirror could you use to make images behind the mirror? 8. What kind o mirror could you use to make images only behind the mirror? 9. What kind o mirror could you use to make images upright? 10. What kind o mirror can only make inverted images? 11. What kind o mirror could you use to only make images upright? 12. What kind o mirror can make an upright image in ront o the mirror? 13. What kind o mirror could you use to make larger images in ront and behind the mirror? 14. What kind o mirror could you use to make smaller images in ront and behind the mirror? 15. What kind o mirror could you use to make virtual images? 16. What kind o mirror can only make a virtual image? 17. What kind o mirror could you use to make real images? 18. What kind o mirror can only make a real image? 19. There are ive objects positioned in ront o the plane mirror in the drawing below. Which one(s) will the observer be able to see relected in the mirror? You may choose more than one. Plane Mirror A B D E 20. The distance o an object rom a concave mirror is varied until both object and image distances are 50 cm rom the mirror. What is the ocal length o the mirror? a. 25 cm b 50 cm c. 100 cm d cm
2 21. A concave mirror has a radius o curvature o 20 cm. For which object distance will the image be real, inverted and smaller than the object? a. 5 cm b. 10 cm c. 15 cm d. 18 cm e. 25 cm 22. Which is true concerning the image ormed by a concave spherical mirror? a. When the object is inside the ocal point, the image is virtual. b. When the object is outside the ocal point, the image is virtual. c. When the object is at the center o curvature, the image is ormed at ininity. d. When the object is inside the ocal point, the image is inverted relative to the object. e. When the object is outside the ocal point, the image is upright relative to the object. 23. The diagram shows an object located at point P, 0.25 meter rom a concave spherical mirror with principal ocus F. The ocal length o the mirror is 0.10 meter. How does the image change as the object is moved rom point P toward point F? a. Image distance decreases and image size decreases. b. Image distance decreases and image size increases. c. Image distance increases and image size decreases. d. Image distance increases and image size increases. 24. The table below lists object and image distances or ive objects in ront o mirrors. For which case was the image ormed by a convex spherical mirror? Object distance Image distance a. 7.1 cm 18.0 cm b cm 16.7 cm c. 5.0 cm cm d cm cm e cm cm 25. An object is 12 cm rom a concave mirror. Its image is twice as tall as the object. The distance o the image rom the mirror is: a. 4.0 cm b. 6.0 cm c. 24 cm d. 48 cm 26. In the demonstration From Mirror to Ininity I moved an object rom the surace o concave mirror to ar rom the mirror. Let s say that when I had moved the object out to 100 cm rom the mirror, the image was at this same position as the object. What would the image be like i the object were now moved out to 200 cm rom the mirror? a. smaller than the object and real c. smaller than the object and virtual b. larger than the object and real d. larger than the object and virtual 27. A concave mirror has a center o curvature o 20 cm. For what range o object distances will the image be real, inverted and smaller than the object? a cm b. 10 cm 20 cm c. 20 cm d. Beyond 20 cm 28. In the table below, ill in the missing blanks. Type (cm) (cm) d o (cm) d i (cm) h o (cm) h i (cm) M a b. onvex c d e oncave
3 29. Use the object and image distances below to decide which type o mirror would produce them. Object Distance (cm) Image Distance (cm) Type o Mirror (Plane, oncave, onvex, or None) Make ray diagrams to locate the ull images o the ollowing objects.
4 31. A thimble 2.5-cm high is 32.0 cm rom a concave mirror. The center o curvature o the mirror is 22.0 cm. What is the size o the thimble s image? 32. An object is placed 18 cm rom a convex mirror, which has a center o curvature o 12.0 cm. The object is 15 cm tall. How tall is the image? 33. A concave mirror produces a real image that is hal the size o the object when the object is 40 cm rom the mirror. What is the distance rom the mirror to the center o curvature? 34. A woman stands 2.0 m in ront o a convex mirror and sees that her image height is 1/4 o her actual height. What is the center o curvature o the mirror? 35. A child 1.1 m tall is standing 6.0 m in ront o a convex mirror with a ocal length o 1.5 m. What is the size o her image? 36. A 40-cm tall image orms when an object is 60 cm rom a 30-cm ocal length concave mirror, How tall is the object?
5 The last our problems are or honors physics only 37. A man with a 30-cm tall head stands 1.0 m in ront o a concave mirror and sees an upright image o head that is 45 cm tall. How close would he need to stand in ront o the mirror in order to produce an inverted image o his head that was hal its height? 38. A ball with a diameter o 10 mm is placed 100 mm in ront o a concave mirror. A virtual image with a diameter o 40 mm is ormed. Where could the ball be placed in order to produce a real image 30 mm in diameter? 39. A spherical mirror that is relective on both sides produces an image that is 30% the size o the object when it is placed 1.0 m rom the convex side o the mirror. What would the magniication be i the object were placed 0.5 m rom the concave side o the mirror? 40. In an experiment like the curved mirror lab, a light bulb placed 40 cm rom a mirror produces an image that is clearly ocused on a screen 60 cm in ront o the mirror? How ar in ront o the mirror would the light bulb need to be placed in order to produce an upright image our times larger than the object?
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