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Mastery Quiz
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1

The angle that a reflected light ray makes with the surface normal
A)is smaller
B)the same size
C)greater than the angle that the incident ray makes with the normal
2

The speed of light in glass is
A)smaller than
B)the same as
C)greater than the speed of light in a vacuum
3

The index of refraction is calculated as
A)the ratio of the speed of light in the material to that in a vacuum
B)the ratio of the speed of light in a vacuum to that in the material
C)the product of the speed of light in a vacuum to that in the material
D)the square root of the speed of light in the material
4

An image for which the light rays actually intersect at the location of the image is a(n) image
5

An image for which the light rays do not intersect at the location of the image is a(n) image.
6

The variation of the index of refraction of a material with wavelength is called
A)reflection
B)refraction
C)inversion
D)dispersion
7

The intersection point for the light rays entering a lens in a path parallel to the axis is called the
A)aperture
B)surface normal
C)focal point
D)vertex
8

The magnification, m, is defined in terms of the image distance, i, and the object distance, o, as
A)m = i/o
B)m = o/i
C)m = -i/o
D)m = -o/i
9

The focal length of a concave mirror is
A)positive
B)a negative
C)zero
D)infinity
10

The focal length of a converging lens is
A)positive
B)negative
C)zero
D)infinity





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