The Index of Refraction of a Certain Glass Is Measured

Multiple Choice

The index of refraction of a certain glass is measured to be 1.5.What is the speed of light in that glass? (c = 3.0 × 10⁸ m/s)

A) 1.0 × 10⁸ m/s
B) 2.0 × 10⁸ m/s
C) 3.0 × 10⁸ m/s
D) 4.0 × 10⁸ m/s
E) 5.0 × 10⁸ m/s