Question

The speed of light in vacuum is 3*10^8m/s what it's speed in glass of refractive index1.5

Answer 1

Speed of light in glass V = 2·10⁸ m/s

Step-by-step explanation:

Given:

c = 3·10⁸ m/s - The speed of light in vacuum

n = 1.5 - Refractive index of glass

__________

V - ?

Speed of light in glass:

V = c / n

V = 3·10⁸ / 1.5 = 2·10⁸ m/s