Question

what are lens??????​

Answer 1

Hey dear ,

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, usually arranged along a common axis

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Answer 2

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

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