There are two types of spherical mirrors they are concave and convex mirror. 
These mirrors are also known as parabolic mirrors.The first mirrors used by people were most likely pools of dark, still water, or water collected in a vessel.The invention of concave and convex mirrors led to many changes and have become a part of our life . 
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Ther eare twp kinds of spherical mirrors-
Concave mirror's reflecting side is on the inside while that of convex mirror is on the outside.
They are also known as paraboilic mirrors

They are used in place of plane mirrors where people need tk get an enlarged ot shortened image of an object.
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good one
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