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The following two laws of reflection of light are applicable to sound waves as well: The incident wave, the normal to the reflecting surface and the reflected wave at the point of incidence lie in the same plane. The angle of incidence ∠i is equal to the angle of reflection ∠r.
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First Law of ReflectionThe incident wave, the reflected wave, and the normal at the point of incidence lie on the same plane.
Law of ReflectionThe angle of incidence is equal to the angle of reflection.
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