The Index of Refraction of Diamond Is 2

Multiple Choice

The index of refraction of diamond is 2.42. This means that a given frequency of light travels

A) 2.42 times faster in air than it does in diamond.
B) 2.42 times faster in diamond than it does in air.
C) 2.42 times faster in vacuum than it does in diamond.
D) 2.42 times faster in diamond than it does in vacuum.
E) 2.42 times faster in vacuum than it does in air.