Question

A ray of light is incident normally on the prism

3

2



    =

 

immersed in a liquid as shown in the figure.

The largest value for the angle α so that ray is totally reflected at the face AC is 30. The refractive

index of the given liquid is




​

Answer 1

Answer:

The largest value of angle ACB, so that the ray is totally reflected at the face AC is 30°.