Question

Light enters from air into a glass plate having refractive index 1.50 what is speed of light in glass?

Answer 1

The speed of light in a medium of refractive index $\mu$ is $\frac{c}{\mu}$, where $c$ speed of light in air.

So, the speed of light in glass having refractive index 1.50 is

$\frac{3*10^8}{1.5} =2*10^8\;m/s$

Answer 2

Hey Buddy ❤

Your Answer -

Given :

Speed of light in vacuum, c = 3 × 10^8 m/s

Refractive index of glass = 1.50

Formula :

Refractive index of a medium = Speed of light in vacuum/Speed of light in the medium

Solution :

Speed of light in the glass

= Speed of light in vacuum/ Refractive index of glass

=3 × 10^8/1.50

= 2x 10^8 ms-1

Glad To Help :D

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