A ray incident at 50° on one refracting surface of a prism of angle 60°, suffers a deviation of 40°. The angle of emergence is:
Answer & explanation
Correct answer: option 4
$ \delta = i + e -A$
$ e = \delta + A - i = 40^o + 60^o - 50^o = 50^o$
The correct answer is Option (4) → 50°