Question

what is reflection . explain

Answer 1

it is the bouncing back of light when it strikes a polished surface.
common
.......examples include the reflection of light sound and water waves the law of reflection says that for circular reflection the angle at which the wave is incident on the surface equal the angle at which it is reflected mirror exhibit specular reflection.
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Answer 2

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an image that you see in a mirror, in water or on a shiny surface