First Law: The incident ray, the reflected ray
and the normal at the point of incidence, all lie in the same plane.
Second Law: The angle of reflection (r) is
equal to the angle of incidence (i).
These laws
of reflection are valid for all types of reflecting surfaces. The surface may
be smooth or rough. It may be a plane mirror, curved mirror, cylindrical or
spherical mirror. The surface may be a spoon or a wall or a book. These laws of
reflection are valid for all types of surfaces.
When light
falls on smooth surfaces, regular reflection will occur. This type of
reflection gives rise to image formation.
When light falls on rough surfaces, irregular
reflection will occur. This type of reflection gives rise to scattering of light.
Such a surface can be seen from all possible directions.
