Question

An incident ray strike a plane mirror at angle 20 degree with mirror the angle between the incident ray and reflected ray is

Answer 1

HEY MATE,

Angle of reflection=angle of incidence [Law of reflection]

The angle of incidence=90-20=70 degree

Therefore angle of reflection =70

So,

The angle between the incident ray and reflected ray=70 +70 = 140 degree which is the answer.