Light And EM Waves 2 Question Preview (ID: 13275)


Mirrors And Lens. TEACHERS: click here for quick copy question ID numbers.

Which of these are both converging?
a) convex mirror and convex lens
b) convex mirror and concave lens
c) concave mirror and convex lens
d) concave mirror and concave lens

Which of these are both diverging?
a) convex mirror and convex lens
b) convex mirror and concave lens
c) concave mirror and convex lens
d) concave mirror and concave lens

How are the focal length and the center of curvature related?
a) the focal length is twice the center of curvature
b) the are two names for the same thing
c) they are not related
d) the center of curvature is twice the focal length

If a lens creates a real image, which of the following CANNOT be true?
a) the image is bigger than the object
b) the image is smaller than the object
c) the image is upright
d) the image is inverted

What is the sign of the focal length for a concave mirror?
a) positive
b) negative
c)
d)

What is the sign of the focal length for a convex mirror?
a) positive
b) negative
c)
d)

What is the sign of the focal length for a concave lens?
a) positive
b) negative
c)
d)

What is the sign of the focal length for a convex lens?
a) positive
b) negative
c)
d)

What is the speed of light?
a) c = 3 x 10^8 m/s, no matter what
b) c = 3 x 10^8 m/s in a vacuum, varies by medium
c) always changing
d) 100 mph

Which of the following is FALSE?
a) the real and virtual sides are different for mirrors and lenses
b) virtual images are always upright
c) the real and virtual sides are the same for mirrors and lenses
d) real images are always inverted

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