Question

information about  the history of spherical  mirror in human civilization

Answer 1

Archimedes burnt the ships of enemies, with the help of sunlight and spherical mirrors.

Reflectors of many items are made up of either of the spherical mirrors

Spherical mirrors are of 2 types, concave and convex.

Concave mirrors converge the light rays and convex mirrors diverge them.

There are several events in history showing that spherical mirrors were generally used to start a fire.

Answer 2

Archimedes is the main person behind this history.
Archimedes burnt the ships of enemies, with the help of sunlight and spherical mirrors i.e. concentrating sunbeams on enemy ships

Spherical mirrors are of 2 types, concave and convex.

Concave mirrors converge the light rays and convex mirrors diverge light rays.

There are several events in history showing that spherical mirrors were generally used to start a fire, spherical mirrors are used in solar cookers ,etc