Question

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

Answer 1

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• A lens is a transmissive optical device that focuses or disperses light beams by means of refraction.
• A simple lens consists of a single piece of transparent material, while compound lenses consist of several simple lenses arranged along with a common axis.
• A lens can focus light to form an image, unlike a prism, which refracts light without focusing.

Answer 2

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A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. ... Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing.