Question

a ray of light is incident at an angle of incidence of 30degrees with a plane mirror. the deviation produced by the mirror is

Answer 1

The ray of light strikes the mirror at an angle of 300, it means it will make an angle of   600(900-300) with the normal.

So angle of incidence =600

and also from the laws of reflection from the mirror, we know that the angle of reflection is always equal to the angle of incidence.

So angle of reflection=600

Angle of incidence has suffered deviation of 600(300 +300 =600)