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Which one of the following is the correct number for the magnification of a plane mirror?


A) 1.0
B) 0.25
C) 0.5
D) 1.5
E) 2.0

F) C) and E)
G) A) and B)

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An object is placed 15. cm from a concave mirror of focal length 20. cm. If the object is 4.0 cm tall, (a) where is the image formed? (b) how tall is it?

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(a)60.cm b...

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A convex mirror always produces a virtual image smaller than the object.

A) True
B) False

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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) of the same size as his face
C) twice as large as his face
D) three times as large as his face
E) four times as large as his face

F) C) and D)
G) C) and E)

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A ray of light in air enters a glass surface at right angles to the surface. What is the angle of refraction?


A) 90°
B) 180°
C) 270°
D) 360°
E) 0°

F) A) and D)
G) B) and C)

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An object 2.0 cm tall is placed 24. cm in front of a convex mirror whose focal length is 30. cm. (a) Where is the image formed? (b) How tall is it?

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(a)13 cm b...

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At what angle must a fish underwater look in order to see a fisherman at the shore? (Note: N for water is 1.33.)


A) 41.2°
B) 48.8°
C) 60.0°
D) 36.9°
E) 90.0°

F) D) and E)
G) A) and B)

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A person approaches a plane mirror at a speed of 3 m/s. How fast does he approach his image?


A) 3 m/s
B) 4 m/s
C) 5 m/s
D) 6 m/s
E) 7 m/s

F) A) and D)
G) D) and E)

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If the magnification of a mirror is negative, which of the following is correct?


A) The image is upright and the mirror is convex.
B) The image is inverted and the mirror is convex.
C) The image is inverted and the mirror is concave.
D) All of the previous answers can be correct.
E) None of the previous answers is correct.

F) B) and D)
G) All of the above

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A object is 12 cm in front of a concave mirror, and the image is 3.0 cm in front of the mirror. What is the focal length of the mirror?


A) 0.25 cm
B) 15 cm
C) 4.0 cm
D) 2.4 cm
E) 1.3 cm

F) B) and C)
G) A) and E)

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A concave mirror is also known as a diverging mirror.

A) True
B) False

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The image formed in a plane mirror is


A) at the same distance in front of the mirror as the object is in front of the mirror.
B) at a shorter distance in front of the mirror than the distance that the object is in front of the mirror.
C) at the same distance behind the mirror as the object is in front of the mirror.
D) at a shorter distance behind the mirror than the distance the object is in front of the mirror.
E) at a larger distance behind the mirror than the distance the object is in front of the mirror.

F) A) and D)
G) D) and E)

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