Question

A ray of light strikes a plane mirror normally. The mirror is rotated through an angle 30. Calculate angle between the two directions of the reflected ray

Answer 1

Answer:

60 degree

Explanation:

if incident ray is fixed then in case you rotate the mirror by any angle theta then reflected ray shifts by an angle 2 theta in the same direction .

so in this case reflected ray will shift by 60 degree.

If u want the proof of above statement about 2 theta then I may provide u.