Question

The Velocity of light in air is 3x108 mls
and 2x 108mls. Find the refractive index
of glass
​

Answer 1

Explanation:

Refractive index of glass = 1.5

Speed of light in air = 3.0 x 108 m/s

We know that

Refractive index of glass = speed of light in air/speed of light in glass

1.5 = 3 x 108/speed of light in glass

Speed of light in glass = 2 x 108 m/s