Question

the absolute refractive index of Glass is 1.5 what is the speed of light in glass​

Answer 1

Hey there!

Given,

Refractive index of glass (μ) = 1.5

We know,

Speed of light in vacuum (c) = 3 * 10⁸

Now,

μ = c / v

where,

v = speed of light in medium

so, v = c / μ

v = (3 * 10⁸) /1.5

v = 2 * 10⁸ m/s

Hence, speed of light in glass is 2 * 10⁸ m/s.