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Reflection is the bouncing back of light from a surface.
the law of reflection states that the incident ray, the reflected ray and the normal to the surface of the mirror all lie on the same plane 
the angle of reflection is equal to the angle of incidence.
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Reflection :- It refers to be the throwing back by a surface of heat , light ,                            water without absorbing it knows as reflection.

LAW OF REFLECTION :- we all know that light travels 
straight so law of reflection refers that when a ray of light collide with a surface the angle of incident is equal to angle of reflection  and the incident ray, the reflected ray, and the normal ray at a point of surface all lie in a same plane.