Question

define concave lens............​

Answer 1

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A concave lens is a type of lens that diverges a straight light beam coming from the source to a diminished, upright, virtual image is known as a concave lens. It can form both real and virtual images. Concave lenses have at least one surface curved inside.

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Answer 2

Answer:

The type of lens which is thinner at the middle and thicker at the edge is called concave lens. lt is also known as diverging lens because when a parallel beam of light rays pass through it, all the light rays get diverged from one another after refraction.