In the use of Snell's Law ,if is smaller than , which of the following is true?
A.
B. The light bends away from the normal
C. The light is raveling faster in the first substance than in the second substance
D. All of the above are true
C
If is smaller than , Snell's Law implies that excluding answer A), which in turn implies that the light bends toward the normal (excluding answer B). Since the index of refraction is defined as:
the higher n is the slower the light is traveling. In this case, the light is traveling faster in the first substance than in the second substance.
