Question

please describe concave lens

Answer 1

concave lens is diverging.
Concave lenses are thinner at the middle.
the image is formed virtual or diminished.

Answer 2

A double concave lens that is bounded by two spherical surfaces that are curved inwards and are thicker at the edges than at the middle are called concave lens. Suchlenses are also called diverging lenses because they diverge light rays.

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