Question

A ray incident at 15 degree on a refracting surface of a Prism of angle 60 degree suffers a division of 55 degree find the angle of emergence

Answer 1

Angle i = 90-15 = 75
angle d = 55
angle of prism (A) = 60
angle of emergence = ?

i + e = A + d
75 + e = 60 + 55
= 115
e = 115 - 75
= 40