# Introduction of Mirror

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It is a glass of piece that is a polished in one side and it is reflecting  on their  other side. The reflect the 60 to 80 precent of the light is called mirror.

Kinds Of mirrors

There are two types of mirror

1-      Plane Mirror

2-      Spherical Mirror

Plane Mirror:-

Plane surface of the mirror is called plane mirror.

Spherical Mirror:-

Spherical mirror is the part of a hollow reflecting sphere if we cut the part of a hollow reflecting sphere that is called this mirror spherical mirror

Sperical mirror are two types

1-      Concave or Converging mirror

2-      Convex or Diverging mirror

Concave or Converging mirror:-

The Spherical mirror is that the inside of the reflecting and the outside is opaque to light due to polish in the mirror that is called this mirror Concave or Converging mirror

Convex or Diverging mirror:-

Out side of a spherical mirror reflecting and in side the opaque to due the light polish of out it.it is called this mirror Convex or Diverging mirror

Centre of curvature:-

The centre of the sphere is in which the part of mirror is called the centre of the Spherical mirror

The radius of sphere of which is the part of mirror is called the radius of curvature. It is show of big R

Pole of the mirror:-

Middle  point of the mirror is called the pole of the mirror

Principle Axis:-

Any line which joine the pole in with the width like as diameter of the mirror is called the principle Axis

Aperture:-

The of the spherical mirror or the  the centre is called the Aperture

Focal Length The distance between of the principle focus and the pole of a spherical mirror is know that as the focal length  it is showed by big F is called the focal length.