Question

A glass prism has refractive index root3/2 and prism angle 90 degree

Answer 1

Answer:

The refractive index μ of the prism is given by, μ = begin mathsize 12px style fraction numerator sin space open square ...

Answer 2

$\bf \pink{\underline\blue{Answer :-}}$

Let μ= √2/3 be the refractive index of prism.

Refracting angle of prism isA=90°

At minimum deviation ,angle of incidence =angle of emergent

Therefore, 1×sinI=μ×sinr 1

1×sine=μ×sinr 2

Since, I=e

Therefore, r 1 =r 2

A+90° −r 1 +90° −r 2 =180°

Therefore, r 1 =45°

1×sinI=μ×sin45°

Therefore, I=60°

minimum deviation=2×i−90

minimum deviation=30°

Hence, Option c is answer