What is the speed of light in a material that has an index of refraction of 2.0? A) 6.0 $\times$ 10⁸ m/s B) 1.5 $\times$ 10⁸ m/s C) 2.0 $\times$ 10⁸ m/s D) 5.0 $\times$ 10⁸ m/s E) No such index can exist.

Question

Quizplus · Accepted Answer

The speed of light in a material is equal to the speed of light in a vacuum (3x10^8 m/s) divided by the material's index of refraction. Therefore, the speed of light in this material would be 1.5x10^8 m/s (3x10^8 m/s divided by 2).

What Is the Speed of Light in a Material That ×\times×

What Is the Speed of Light in a Material That $\times$