If the angle of incidence on a plane mirror is `30^(@)`, then angle between the reflected ray and the plane mirror is _____

Answer

`60^(@)`

Explanation

If the angle of incidence is `30^(@)`, the angle of reflection is also `30^(@)`. The angle between the normal line and plane mirror is `90^(@)`. So, the angle between reflected ray and the plane mirror is `90^(@)-30^(@)=60^(@)`.