Question

what is concave mirror​​

Answer 1

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☞ A concave mirror is a spherical mirror whose reflecting surface is on the inner side. It is also known as a converging mirror, as a parallel beam of light after reflection from a concave mirror converges at a point.

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Answer 2

Answer:

A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex or concave. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices.