Question

Define reflected rays.

Answer 1

Hint: The word reflected means To throw or bend back from a surface. or To give back or show an image of a mirror. A ray of light or another form of radiant energy that is thrown back from a non permeable or non-absorbing surface is called reflected ray. The ray of light that bounces back from the surface of reflection is called the reflected ray.

Complete answer:
The reflected ray corresponding to a given incident ray, is the ray that represents the light reflected by the surface. The angle between the surface normal and the reflected ray is known as the angle of reflection. The Law of Reflection says that for a specular surface, the angle of reflection is always equal to the angle of incidence.
The refracted ray or transmitted ray corresponding to a given incident ray represents the light that is transmitted through the surface. The angle between this ray and the normal is known as the angle of refraction, and it is given by Snell's Law. Conservation of energy requires that the power in the incident ray must equal the sum of the power in the refracted ray, the power in the reflected ray, and any power absorbed at the surface.
Angle of incidence - the angle form between the incident ray and the normal is the angle of incidence. All the rays the incident, normal and reflected, lie on the same plane.

Note:
The ray which strikes at the normal is called incident ray and the ray which bounces back after striking the surface is called reflected ray. If the material is birefringent, the refracted ray may split into ordinary and extraordinary rays, which experience different indexes of refraction when passing through the birefringent material.