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    In physics, what is a lens?

    PRADEEP KUMAR 12th Nov, 2021
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    PRADEEP KUMAR 12th Nov, 2021

    A lens is a transmissive optical device that employs refraction to distribute or focus a light beam. A simple lens is made up of a single piece of transparent material, whereas a compound lens is made up of numerous simple lenses or pieces organised along a common axis.

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