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Ch. 19=Part 5
Test Description: Light, Mirrors, and Lenses
Instructions: Answer all questions to get your test result.
1) a beam of light
A
wave length
B
light wave
C
light ray
D
focal light
2) the point at which light becomes focused
A
optical axis
B
focal point
C
focal axis
D
optical point
3) distance along the optical axis from the center of the mirror to the focal point
A
optical axis
B
optical length
C
focal axis
D
focal length
4) a mirror or lens that curves inward and causes light waves to converge or meet
A
convex lens
B
concave mirror
C
convex mirror
D
concave lens
5) a mirror or lens that curves outward and causes light waves to diverge or spread apart
A
concave lens
B
convex lens
C
concave mirror
D
convex mirror
6) What is the speed of light in empty space?
A
300,000,000 m/s
B
227, 000, 000 m/s
C
127,000,000 m/s
D
197,000,000 m/s
7) Light waves travel faster through which of the following?
A
water
B
air
C
diamond
D
vacuum
8) a mirror or lens that curves inward and causes light waves to diverge
A
convex mirror
B
concave mirror
C
concave lens
D
convex lens
9) a mirror or lens that curves outward and causes light waves to converge or meet
A
convex lens
B
convex mirror
C
concave mirror
D
concave lens
10) When an object reflects reflects all the light waves that strike it, it looks ______________ and when an object reflects none of the light waves that strike it, it looks _____________.
A
white, blue
B
black, white
C
white, black
D
black, green
*select an answer for all questions
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