Question

3. A ray of light travelling in air is incident on a face of
a rectangular slab and comes out from the opposite
face. The angle between the incident ray and the
normal to the surface is 30°. What is the angle
between the ray coming out of the slab and the
normal to the face from which it comes out?

no one can solve if you solve it briefly​

Answer 1

Answer:

60°

since it's a glass slab, parallel shift take place

so angle made by normal remains same i.e 30° so angle made

with slab is 90-30 = 60°

hope it helps you