Question

(1) On entering in a medium from air, the speed of light becomes half of its value
air. Find the refractive index of that medium with respect to air?
glass slab made of a material of refractive index n, is kept in a medium
refractive index 12.
A light ray is incident on the slab. Draw the path of the rays of light emerging om
the glass slab, if (i) n,>n, (ii) n, = n2 (iii) n,< n2​

Answer 1

Explanation:

Given 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?

Refractive index of a medium is equal to velocity of light in vacuum / velocity of light in the medium.

Let the velocity of light in vacuum be v1 and velocity of light in the medium be v2.  

So v2 = v1/2

Now μ = v1/v2

          = v1 / v1/2

          = 2

So refractive index of the medium is 2.

Reference link will be

https://brainly.in/question/13397203

Answer 2

Answer:

2will be the correct answer hope it helps you