For all transparent material substances, the index of refraction
A)is less than 1.
B)is greater than 1.
C)is equal to 1.
D)is less than or equal to 1.
E)is greater than or equal to 1.

Question

Quizplus · Accepted Answer

The index of refraction for any transparent material is greater than 1 because it is defined as the ratio of the speed of light in a vacuum to the speed of light in the material, and light travels slower in any medium other than a vacuum.

For All Transparent Material Substances, the Index of Refraction