Theory:

Spherical mirrors are one form of a curved mirrors. If the curved mirror is a part of a sphere, then it is called a spherical mirror.
A spherical mirror is a mirror that has the shape of a piece cut out of a spherical surface. One side of this mirror is silver coated, and the reflection of light occurs at the other side.
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There are two types of spherical mirrors:
  1. Concave and
  2. Convex
Concave Mirrors:
 
A spherical mirror, in which the reflection of light occurs at its concave surface, is called a concave mirror.
 
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These mirrors magnify the object placed close to them. The most commonly used examples of concave mirrors are shaving mirrors and makeup mirrors.
 
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Convex Mirrors:
 
A spherical mirror, in which the reflection of light occurs at its convex surface, is called a convex mirror.
 
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The image formed by these mirrors is smaller than the object. The most commonly used examples of convex mirrors are the passenger side wing mirrors of cars.
 
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Reference:
https://commons.wikimedia.org/wiki/File:Mirror_MET_141134.jpg
https://www.flickr.com/photos/shareski/3786803863
https://upload.wikimedia.org/wikipedia/commons/d/d3/Wing_mirror.jpg