Question

what is a lens??????​

Answer 1

Answer:

Lens: A lens is a piece of a refracting medium bounded by two surfaces, at least one of which is a curved surface. The commonly used lenses are the spherical lenses, which have either both surfaces spherical or one spherical and the other a plane one. ... It converges a parallel beam of light on refraction through it.

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Answer 2

Answer:

Lens:

A lens is a clear (transparent) object (like glass, plastic or even a drop of water) that changes the way things look by bending the light that goes through it. ... Each eye also has a lens. They work by refraction, or the bending of light.