The speed of light in a certain medium is 2.2 x 10⁸ m/s. What is the index of refraction of this medium? A) 1.0 B) 1.4 C) 1.2 D) 1.8 E) 1.6

Question

Quizplus · Accepted Answer

The index of refraction (n) of a medium is given by n = c/v, where c is the speed of light in vacuum (approximately 3.0 x 10^8 m/s) and v is the speed of light in the medium. Given v = 2.2 x 10^8 m/s, n = (3.0 x 10^8 m/s) / (2.2 x 10^8 m/s) = 1.36, which rounds to 1.4, making option B correct.

The Speed of Light in a Certain Medium Is 2