Question

index OT TOCR
respect to ice.
5. Light enters from air into glass plate which has a refractive index of 1.50. Calculate the speed of light L
in glass. The speed of light in air is 3 * 108 ms!
IMROSE 2015, 2017)​

Answer 1

Given,

Speed of Light (c) = 3*10⁸ m/s

Refractive Index of Glass (μ) = 1.5

Let the Speed of Light in glass be V,

So,

∴ μ = c/V

= 1.5 = 3*10⁸/V

= 1.5V = 3*10⁸

= V = (3/1.5) * 10⁸

= V = 2*10⁸ m/s

The Speed of Light in glass is 2*10⁸ m/s.

I hope this helps.