Question

A ray of light incident at an angle 40°on one phase of an equilateral prism (n=1.6) find angle of emergence

Answer 1

Answer:

so, 30° = 60° + e - 30°

or, e = 0°

hence , angle made by emergent ray with normal to the face of plane is 0°.

hence, angle made by the emergent ray with second face of prism will be 90°