Reflection of light

Reflection

The return of light into the same medium after striking a surface

Laws of reflection

1 angle of incidence and angle of reflection are equal

2 incident ray, reflected ray, and normal lie in the same plane

Lateral inversion

The interchange of the left and right sides in the image of an object in a plane mirror

Spherical mirror

A reflecting surface which is a part of sphere

Centre of curvature

Centre of sphere of which the mirror is a part

Radius of curvature

Radius of sphere of which the spherical mirror is a part of

Pole

Geometric centre of spherical surface of mirror

Aperture

The plane surface area of the mirror through which light rays enter and fall on the mirror

Principal axis

Straight line joining the pole of the mirror to its centre of curvature