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).

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Answer 2

Answer:

Concave lens or divergening lens diverge the light rays .This is thinner at its centre that at its edges and it is used to correct myopia