Question

The speed of light in a certain glass is 2*10 8 m/s what is the index of refraction of the glass

A. 1.5 B. 1.3 C. 1.4 D.1.6

Answer 1

Answer: A) 1.5

Explanation:

Let the refractive index of glass = a Speed of light in vaccum, C = 3 x 10^8 m/s

Given speed of light in medium, V = 2 x 10^8 m/s

Since,. Refractive index = C/V

a = 3 x 10^8/ 2 x 10^8

a = 3/2 = 1.5 ______(Ans.)

Thanks!