A ray of light is deviated by an angle of 60' by a plane mirror.Find
a)angle of incidence
b)angle of reflection
c)angle between mirror and incident ray.
Explain with a diagram.

Asked by SHUBHAM GHODE | 20th Mar, 2017, 04:08: PM

Expert Answer:

(a) Angle of deviation δ = 180 – 2i
Given that δ = 60º
→ 2i = 120
→ i = 60º
(b) According to law of reflection angle i = angle r = 60º
(c) From the geometry of the figure, it is clear that the angle with the mirror surface 30º.

Answered by Yashvanti Jain | 20th Mar, 2017, 07:03: PM