Unit Test — Unit test Answers
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22
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Which lists the waves in order of frequency, from highest to lowest?
A
X-rays, gamma rays, ultravioletB
radio waves, visible light, X-raysC
ultraviolet, microwaves, gamma raysD
visible light, infrared, microwaves23
Which statement describes how rays behave when they travel through media during reflection and refraction?
A
During refraction, rays stay in the original medium, and during reflection, rays pass into a new medium.B
During reflection, rays stay in the original medium, and during refraction, rays pass into a new medium.C
During reflection and refraction, rays stay in the original medium.D
During reflection and refraction, rays pass into a new medium.24
Which shows the correct lens equation?
A
The inverse of f equals the inverse of d Subscript o Baseline times the inverse of d Subscript I Baseline.
B
The inverse of f equals StartFraction d Subscript o over d Subscript I Baseline EndFraction plus StartFraction d Subscript I Baseline over d Subscript o Baseline EndFraction.
C
The inverse of f equals the inverse of d Subscript o Baseline minus the inverse of d Subscript I Baseline.
D
The inverse of f equals the inverse of d Subscript o Baseline plus the inverse of d Subscript I Baseline.
25
A 15.0 cm object is 12.0 cm from a concave mirror that has a focal length of 4.8 cm. Its image is 8.0 cm in front of the mirror.What is the approximate height of the image produced by the mirror?
A
–4 cmB
–10 cmC
10 cmD
4 cmDid you find these answers helpful?
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