Question

i) On entering in a medium from air, the speed of light becomes half of its value in

air. Find the refractive index of that medium with respect to air?​

Answer 1

Explanation:

Question-:

On entering in a medium from air, the speed of light becomes half of its value in air.

Find the refractive index of that medium with respect to air?

Solution-:

Let the speed of light in air be 'x' m/s.

Then, on entering in a medium from air, the speed will be x/2 m/s.

Then,

The refractive index of that medium with respect to air =

Speed of light in air/Speed of light in that medium.

= (x m/s) ÷ (x/2 m/s)

= 2

ANSWER = 2.