Question

3 x 108 m/s?
(ii) The velocity of light in a medium is 2 x 108 m/s. What is the refractive
index of the medium with respect to air, if the velocity of light in air is​

Answer 1

Answer:

The answer will be 1.5.

Explanation:

We have given;

Velocity of light in air = 3 × 10^8 m/s;

Velocity of light in the given medium=2×10^8m/s

For the evalutaion of refractive index, the expression is given as;

Refractive index of the medium with respect to air = velocity of light in air / velocity of light in medium

Hence, put the given values in the respective varibles of the formula;

Refractive index = 3 × 10^8 / 2 × 10^8;

= 3 / 2 or 1.5;

Hence the Refractive index of the medium with respect to air = 1.5.

That's all.