a ray of light is incident on a plane mirror at an angle of 30 degree . what is the angle of reflection show with dig pls

Solution:

The angle made by the incident ray with the plane mirror = 30 degree

It can be drawn here,



The angle of incidence forming on plane mirror = 30 degree

Therefore,angle of incidence = 60 degrees (90 degree - 30 degree)
Angle of incidence is equal to angle of reflection
Therefore,angle of reflection =60 degrees