Question

A light ray incident on a plane mirror is at an angle
of 55° relative to the mirror surface. At what angle
is the reflected ray relative to the surface?​

Answer 1

Further on reflection, it makes the same angle i.e. angle of reflection is equal to angle of reflection. Hence, as angle of incidence is 55∘ angle of reflection too is 55∘ and the angle between the incident ray and the reflected ray is 55∘+55∘=110∘ .

Answer 2

Answer:

55°

Explanation:

If we draw the diagram,given angle is incident on the surface 55° with respect to the plane.

If we consider the normal at the point of incidence..

The angle made by the incident ray with the normal is (90-55)=35°

As the mirror law states angle of incidence = angle of reflection

The reflected ray makes an angle of 35° with respect to normal.

Thus the angle made by the reflected ray with respect to the plane surface is (90-35)=55°

Hope it helped.....