3.2 Spherical mirrors

1.1 Few general points of geometrical optics
1.2 Object and image

2.1 Laws of reflection of light
2.2 Reflection by a plane mirror

3.1 Paraxial approximation
3.2 Spherical mirrors
3.3 Sign convention
3.4 Ray tracing
3.5 Image formation by concave mirror
3.6 Image formation by convex mirror

5.1 Lateral magnification
5.2 Longitudinal magnification
5.3 Superficial magnification

6.1 Graph between $\left( {\frac{1}{v}} \right)$ and $\left( {\frac{1}{u}} \right)$

Mirrors which are part of a symmetrical curved surface like sphere, ellipsoid, cylindrical etc are called spherical mirrors.

Spherical mirrors is of two types,

1. Concave mirrors

2. Convex mirrors

When the reflection takes place from the inner surface and the outer surface is polished, the mirror is known as concave mirror.

Concave mirror is also known as converging mirror as it converges all the light ray to a single point i.e. focus after reflection.

When the reflection takes place from the outer surface and the inner surface is polished, the mirror is known as convex mirror.

Convex mirror is also known as diverging mirror as it diverges all the light ray from a single point i.e. focus after reflection.