Question

the refractive index of glass is 1.50 and the speed of light in air is 3x 108 ms-1. calculate the speed of light in glass​

Answer 1

Answer:

What is the speed of light in the glass? The speed of light in vacuum is 3 x 108 ms-1. =3 — 108/1.50 = 2x 108 ms-1.

Explanation:

Answer 2

Answer:

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

Speed of light in vacuum (c) = 3 × 108 m/s

Refractive index of glass (ng) = 1.50

Speed of light in the glass (v) = Speed of light in vacuum/ Refractive index of glass

= c/ng

=3 × 108/1.50 = 2x 108 ms-1.