Question

what is concave lens?​

Answer 1

Answer:

A concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia)

Answer 2

A lens which is thinner at the centre and thicker at its ends is called a concave lens.

A concave lens is also known as diverging lens because it diverges a parallel beam of light rays passing through it.

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