The process of turning back of light into the same medium is called a reflection of light.
Laws of Reflection of Light
The angle of incidence is equal to the angle of reflection.
Angle of Incidence
The angle between normal and incident ray is known as angle of incidence. It is denoted by letter i.
Angle of Reflection
The angle between normal and reflected ray is known as angle of reflection. It is denoted by letter r.