Question

if velocity of light in a medium is 2 into 10 power 8 metre per second then what is the refractive index of the medium​

Answer 1

Answer:

1.5

Explanation:

Given :

Velocity of light in given medium = 2 × 10⁸ m / sec

We have :

Speed of light in vacuum = 3 × 10⁸ m / sec

We know :

Refractive index = Speed of light in vacuum / Velocity of light in given medium

i.e n = c / v

n = 3 × 10⁸ m / sec / 2 × 10⁸ m / sec

n = 3 / 2

n = 1.5

Therefore , refractive index of the medium​ is 1.5