The index of refraction of a certain medium is 1.5. What is the speed of light in that medium? A) 5.0 × 10⁸ m/s B) 1.0 × 10⁸ m/s C) 3.0 × 10⁸ m/s D) 4.0 × 10⁸ m/s E) 2.0 × 10⁸ m/s

Question

Quizplus · Accepted Answer

The speed of light in a medium is given by the formula v = c/n, where c is the speed of light in a vacuum (approximately 3.0 × 10^8 m/s) and n is the index of refraction. For n = 1.5, v = 3.0 × 10^8 m/s / 1.5 = 2.0 × 10^8 m/s.

The Index of Refraction of a Certain Medium Is 1