The index of refraction, n, of a material is a measure of how the speed of light changes. What can be said about the speed of light in a material with n=1.5 compared to a material with n=1.7?
A. It is the same for both.
B. It is slower in the n=1.7 material.
C. It is slower in the n=1.5 material.
D. It depends on the wavelength of the light.
Ans: B. It is slower in the n=1.7 material.
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A.
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