A concave mirror has a focal length of 30 cm. An object that is 3 cm tall is placed 60 cm from the mirror. How tall is the image?
a. -3 cm
b. -6 cm
c. 0 cm
d. 6 cm
e. 3 cm
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A Concave mirror has a focal length of 20 cm. A 4 cm tall object is placed 40 cm away from the mirror. How tall is the image of the object?
Answer: cm \
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Question 4: 10 points
Sitting in her living room one night, Gerty sees a reflection of her cat, Whiskers, in teh living room window. If the image of Whiskers makes an angle of 40 degrees with the normal (perpendicular bisector), at what angle does Gerty see him reflected?
Answer: degrees Attempts:
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Question 5: 10 points
Wendy the witch is polishing her crystal ball. It is so shiny that she can see her reflection when she gazes into the ball form a distance of 15cm. What is the focal length of Wendy's crystal if she can see her reflection 4 cm behind the surface?
Answer: cm Attempts:
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Question 6: 10 points
Witg gus face 6.0 cm from his empty water bowl, Spot sees his reflection 12 cm behind the bowl and jumps back. What is the focal length of the bowl?
Answer: cm Attempts:
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Question 7: 10 points
Polly applies her mascara while looking in a concave mirror whose focal length is 18 cm. She looks into it from a distance of 12 cm. What is the distance from the image to the mirror? (Use a positive number - distance)
Answer: cm Attempts:
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Question 8: 10 points
A convex mirror has a focal length of 20 cm. Determine the object location for which the image will be one half as tall as the 10 cm tall object.
Answer: cm Attempts:
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Question 9: 10 points
A concave mirror is aimed at the moon. How far from the 100cm focal length mirror will the image be formed?
a. 100 cm
b. 200 cm
c. On the moon.
d. It will not be formed.
e. -200 cm
Attempts:
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Question 10: 10 points
A 5.0 cm high object is situated 25.0 cm in front of a concave mirror that has a radius of curvature of 11.0 cm. Draw a ray diagram to scale. (Do this on paper. Your instructor may ask you to turn in the diagram.) Use the diagram to find the image distance.
Answer: cm in front of mirror Attempts:
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Question 11: 10 points
A mirror produces an image that is located 38.00 cm behind the mirror when the object is located 12.67 cm in front of the mirror. What is the focal length of the mirror?
Answer: cm Attempts:
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Question 12: 10 points
A concave mirror has a focal length of 13 cm. This mirror forms an image located 39 cm in front of the mirror. What is the magnification of the mirror?
Answer: Attempts:
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Question 13: 10 points
A concave mirror (f = 47 cm) produces an image whose distance from the mirror is one-third the object distance. What is the distance from the mirror to the object?
Answer: cm Attempts:
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Question 14: 10 points
A clown is using a concave makeup mirror to get ready for a show and is 27 cm in front of the mirror. The image is 64 cm behind the mirror. What is the focal length of the mirror?
Answer: cm Attempts:
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Question 15: 10 points
A Convex mirror has a focal length of -20 cm. If a 5 cm high object is placed 10 cm from the mirror, how tall is the image?
Answer: cm Attempts:
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a. -3 cm
b. -6 cm
c. 0 cm
d. 6 cm
e. 3 cm
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A Concave mirror has a focal length of 20 cm. A 4 cm tall object is placed 40 cm away from the mirror. How tall is the image of the object?
Answer: cm \
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Question 4: 10 points
Sitting in her living room one night, Gerty sees a reflection of her cat, Whiskers, in teh living room window. If the image of Whiskers makes an angle of 40 degrees with the normal (perpendicular bisector), at what angle does Gerty see him reflected?
Answer: degrees Attempts:
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Question 5: 10 points
Wendy the witch is polishing her crystal ball. It is so shiny that she can see her reflection when she gazes into the ball form a distance of 15cm. What is the focal length of Wendy's crystal if she can see her reflection 4 cm behind the surface?
Answer: cm Attempts:
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Question 6: 10 points
Witg gus face 6.0 cm from his empty water bowl, Spot sees his reflection 12 cm behind the bowl and jumps back. What is the focal length of the bowl?
Answer: cm Attempts:
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Question 7: 10 points
Polly applies her mascara while looking in a concave mirror whose focal length is 18 cm. She looks into it from a distance of 12 cm. What is the distance from the image to the mirror? (Use a positive number - distance)
Answer: cm Attempts:
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Question 8: 10 points
A convex mirror has a focal length of 20 cm. Determine the object location for which the image will be one half as tall as the 10 cm tall object.
Answer: cm Attempts:
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Question 9: 10 points
A concave mirror is aimed at the moon. How far from the 100cm focal length mirror will the image be formed?
a. 100 cm
b. 200 cm
c. On the moon.
d. It will not be formed.
e. -200 cm
Attempts:
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Question 10: 10 points
A 5.0 cm high object is situated 25.0 cm in front of a concave mirror that has a radius of curvature of 11.0 cm. Draw a ray diagram to scale. (Do this on paper. Your instructor may ask you to turn in the diagram.) Use the diagram to find the image distance.
Answer: cm in front of mirror Attempts:
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Question 11: 10 points
A mirror produces an image that is located 38.00 cm behind the mirror when the object is located 12.67 cm in front of the mirror. What is the focal length of the mirror?
Answer: cm Attempts:
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Question 12: 10 points
A concave mirror has a focal length of 13 cm. This mirror forms an image located 39 cm in front of the mirror. What is the magnification of the mirror?
Answer: Attempts:
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Question 13: 10 points
A concave mirror (f = 47 cm) produces an image whose distance from the mirror is one-third the object distance. What is the distance from the mirror to the object?
Answer: cm Attempts:
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Question 14: 10 points
A clown is using a concave makeup mirror to get ready for a show and is 27 cm in front of the mirror. The image is 64 cm behind the mirror. What is the focal length of the mirror?
Answer: cm Attempts:
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Question 15: 10 points
A Convex mirror has a focal length of -20 cm. If a 5 cm high object is placed 10 cm from the mirror, how tall is the image?
Answer: cm Attempts:
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