A light ray is incident ona plane mirror making an angle of 90^(@) with the mirror's surface. The angle of reflection of the light is _______ .

A light ray is incident ona plane mirror making an angle of 90^(@) wit

1.	A light ray is incident ona plane mirror making an angle of 90^(@) with the mirror's surface. The angle of reflection of the light is _______ .
Answer» Solution :If the light ray MAKES an ANGLE of `90^(@)` with the SURFACE of the MIRROR, then Angle of INCIDENCE `=0^(@)` Therefore, angle of reflection `=0^(@)`