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A plane mirror produces an image of the same size.* a concave mirror produces a magnified image.* A convex mirror produces a diminished image.
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concave mirror : a spherical mirror which is polished from outer curved side such the tits reflecting side is towards the hollow sides called concave mirror.

convex mirror:a spherical mirror which is polished from hollow side such that reflecting surface is towards outer side is called convex mirror.

plane mirror : a polished and flat reflecting surface is called plane mirror. 
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