Question

What is the refractive index of the medium in which light enters from air and travels with the speed of 2x10^8 m/s?(given that the speed of the light in air is 3x10^8m/s.

Answer 1

Answer:

Refractive index of medium(n) = velocity of light in air / velocity of light in medium

so n = 3×10^8/ 2×10^8

n = 3/2

n = 1.5

Hence the Refractive index of the medium is 1.5