Question

what is lens???????????????????????????????

Answer 1

Answer:

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A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.

Answer 2

Answer:

a curved piece of glass that makes things look bigger, clearer, etc. when you look through it