Quiz #1



Optics Module 1 Study GuideThe following are multiple-choice and other questions that are similar to the style that will be posed on the test.1. _____If Demonstration #1 (The Image Walk) were done with a light source that was triangular and blocker that had square openings, the images seen would be:a. triangularb. squarec. circulard. “a” or “b”e. none of these2. _____An object 2 m tall is 8 m in front of a vertical plane mirror. An observer is 12 m in front of the mirror. The image of the object is:a. 1 m tall and 8 m behind the mirrorc. 1 m tall and 12 m behind the mirror b. 2 m tall and 8 m behind the mirrord. 2 m tall and 12 m behind the mirror3836035749307 m 007 m 3. _____In the diagram below, a person is standing 7 meters from a plane mirror. The chair in front of the person is located 2 m from the mirror. What is the distance between the person and the image he observes of the chair? a. 2 m c. 7 mb. 5 m d. 9. m e. 11 m4. _____When you look at yourself in a plane pocket mirror, and then hold the mirror farther away, you see a. more of yourself. b. less of yourself. c. the same amount of yourself. 5. _____When a boy who is 2.00 meter tall stands in front of a vertical plane mirror, he is able to see the image of his entire body. What is the minimum height, from top to bottom, of the mirror? a. 0.50 m b. 1.00 mc. 2.00 m d. 4.00 m6. _____Light rays from a candle flame are incident on a convex mirror. After reflecting from the mirror, these light rays a. converge and form a virtual image c. diverge and form a virtual image b. converge and form a real image d. diverge and form a real image 7. _____The image formed by a convex mirror:a. is always virtual and smaller than the object c. is always real and smaller than the objectb. is always virtual and larger than the objectd. may be real or virtual8. _____Which is true concerning a convex mirror?a. It can form a real image.b. It must be spherical in shape.c. The image will always be inverted relative to the object.d. It produces a larger image than does a plane mirror for the same object distance.e. The image it produces is closer to the mirror than it would be in a plane mirror for the same object distance.9. _____If an object is located between the focal point and the surface of a concave mirror, what type of image will be formed and how will its size compare to the object? a. real and smallerb. real and largerc. virtual and smallerd. virtual and larger10. _____The virtual image formed by a concave mirror:a. can be smaller than the object. c. can be closer to the mirror than the object.b. can be larger than the object.d. can be located at any point in front of the mirror.11. _____A concave mirror has a center of curvature of 20 cm. For which object distance(s) will the image be in the same orientation as the object? (You may choose more than one.)a. 5 cmb. 8 cmc. 15 cmd. 18 cme. 25 cm12. _____A concave mirror has a center of curvature of 20 cm. For which object distance will the image be real, inverted and larger than the object? a. 10 cmb. 15 cmc. 20 cmd. 25 cm13. _____An object is 12 cm from a concave mirror. Its image is half as tall as the object. The distance of the image from the mirror is:a. 4.0 cmb. 6.0 cmc. 24 cmd. 48 cm4843780800100014. _____A candle is located beyond the principal focus, F, of a concave spherical mirror. Two light rays originating from the same point on the candle are incident on the mirror, as shown in the diagram below. After reflecting from the mirror, the light rays will:a. converge to form a virtual image c. diverge to form a virtual imageb. converge to form a real imaged. diverge to form a real imageChoose the best response for each of the following questions. A response may be used more than once.a.plane mirrore.plane mirror or convex mirrorb.concave mirrorf.concave mirror or convex mirrorc.convex mirrorg.plane mirror, concave mirror, or convex mirrord.plane mirror or concave mirrorh.No mirror15. _____What kind of mirror could you use to make images smaller than the object?16. _____What kind of mirror can only make an image the same size as the object?17. _____What kind of mirror could you use to make images in front of the mirror?18. _____What kind of mirror could you use to make images behind the mirror?19. _____What kind of mirror could you use to make images only behind the mirror?20. _____What kind of mirror could you use to make images upright?21. _____What kind of mirror could you use to only make images upright?22. _____What kind of mirror can make an upright image in front of the mirror?23. _____What kind of mirror could you use to make larger images in front and behind the mirror?24. _____What kind of mirror could you use to make smaller images in front and behind the mirror?25.In the table below, fill in the missing blanks. Typef (cm)C (cm)do (cm)di (cm)ho (cm)hi (cm)Ma.Concave153010-305153b.Convex-5010040-2212.67.55c.Planen/an/a200-2001001001d.Concave100200200200100100-1e.Concave153060203010.33f.Concave255010-16.724401.6726.A concave mirror produces a real image that is half the size of the object when the object is 40 cm from the mirror. What is the distance from the mirror to the center of curvature? (26.7 cm)27.A 40-cm tall image forms when an object is 60 cm from a 30-cm focal length convex mirror, How tall is the object?(13.3 cm)28.A concave mirror is designed so the virtual image is three times the size of the object when the object is 18 cm from the surface of the mirror. What is the center of curvature of the mirror? (54 cm)29.A thimble 2.5-cm high is 32.0 cm from a concave mirror. The center of curvature of the mirror is 22.0 cm. What is the size of the thimble’s image? (1.3 cm)30.You measure an image distance of 75 cm behind concave mirror with a 32-cm focal length. What is the magnification of the image? (3.3)31.An object is placed 18 cm from a silver Christmas tree bulb, which has a diameter of 9.0 cm. The object is 15 cm high. How high is the image? (1.67 cm) 32.Make ray diagrams to locate the full images of the following objects. 335280-232459CfCf885190113079Cf00Cf9207572439Cf00Cf4952365647700030031591365730033.The sculpture below is Dega’s “Little Dancer.” The vertical line to the right represents a plane mirror. Draw two rays from the nose of the dancer to the mirror and two rays from the toe of the dancer to the mirror. Then draw the corresponding reflected rays and show how these rays are used by the viewer to construct the image.The remaining problems are for honors physics only. I have provided these because there are no problems like these in the textbook. You will have ones like this on the test.Plane mirrorImage34.Draw a ray diagram to locate the object producing the indicated image seen by the eye.35.There are three objects positioned near a plane mirror in the drawing below. Which one(s) will the observer be able to see reflected in the mirror? You must draw in light rays to give evidence for your answer.7981955316855abcPlane mirrorabcPlane mirror36.A man with a 30-cm tall head stands 1.0 m in front of a concave mirror and sees an upright image of head that is 45 cm tall. How close would he need to stand in front of the mirror in order to produce an inverted image of his head that was half its height? (9.0 m)37.A ball with a diameter of 10 mm is placed 100 mm in front of a concave mirror. A virtual image with a diameter of 40 mm is formed. Where could the ball be placed in order to produce a real image 30 mm in diameter? (178 mm)38.A spherical mirror that is reflective on both sides produces an image that is 30% the size of the object when it is placed 1.0 m from the convex side of the mirror. What would the magnification be if the object were placed 0.5 m from the concave side of the mirror? (6.1)39.In an experiment like the curved mirror lab, a light bulb placed 40 cm from a mirror produces an image that is clearly focused on a screen 60 cm in front of the mirror? How far in front of the mirror would the light bulb need to be placed in order to produce an upright image four times larger than the object? (18 cm) ................
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