Question

the light ray strikes a reflection plan mirror at the angle of 54 degree with the surface calculate angle made by the reflected ray and the surface​

Answer 1

Explanation:

For a plane mirror: If the incident ray falls along the normal, the angle of incidence is 0 degrees, NOT 90 degrees. The angle is measured with the normal to the mirror and not with the plane of the mirror. Hence the angle of reflection is equal to 0 degrees.