Question

Light enters train air to glass having refractive index 1.50. What is the speed of light in the glass? The speed ref light in vacuum is 3 × 10^8 m/s.

Answer 1

Explanation:

Given that,

Refractive index μ=1.50

Speed of light c=3×108m/s

We know that,

  ng=vgc

 vg=1.503×108

 vg=2×108m/s

Hence, the speed of light in glass is 2×108m/s