Question

what is the use of lenses

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Answer 1

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Lenses are used to focus light. Because focusing light is so important, you can find lenses in many places. Perhaps the most common lens that we see are the ones in peoples glasses. There is a small lens in each of our eyes.

Answer 2

Answer:

A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.