The concave mirrors are used in reflecting telescopes as parabolic mirrors, in magic lanterns, and in cinema projectors etc.
If a hollow sphere is cut into parts and the exterior surface of the cut part is painted, then it becomes a mirror with its internal surface as the reflecting surface. This type of mirror is known as a concave mirror.
Uses of concave mirror
Concave mirrors reflect light inward to one focal light. Therefore, they are mostly used to focus light. Listed below are uses of concave mirrors
- Shaving mirrors
- Head mirrors
- Astronomical telescopes
- Solar furnaces