Question

If angle of incidence is 30° then angle of refraction and angle of emergence is

Answer 1

We know that Refractive Index is the ratio if sines of angle of incidence to angle of refraction. That is,

Refractive Index = Sin i / Sin r

So given that, Refractive Index is √3 and sin r is 30°

=> √3 = Sin i / Sin 30

=> √3 * Sin 30 = Sin i

=> √3 * 1 / 2 = Sin i

=> Sin i = √3 / 2

We know that, Sin 60 is √3 / 2. Hence,

Sin i = Sin 60

=> i = 60°

Hence the angle of incidence is 60°.

Hope my answer helped