what do you mean by reflection of light

reflection of light is the bouncing back of ray of light when it hit an object. The intensity of light reflected depends on the colors of the object. Whites objet reflects all colors of lights, while lack object absorbs all colors light. Therefore ideally  when light rays fall on an whit object the intensity of the reflected beam is large whereas when same  light fall on a black object  the intensity is lower. The direction of the reflected beam depends on the angle of incident rays. According to the 2^nd law of reflection the incident angle against the normal is equal to the angle of reflection, the reflected beam behave differently depending on the degree of roughness of the reflecting surface. Smooth surface will produce specular reflection while a rough surface will produce a diffused reflection.