Question

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what is use of lens?????​

Answer 1

A lens can focus light to form an image, unlike a prism, which refracts light without focusing. ... Lenses are used in various imaging devices like telescopes, binoculars and cameras. They are also used as visual aids in glasses to correct defects of vision such as myopia and hypermetropia.

Answer 2

Answer:

A lens is a tool used to bring light to a fixed focal point. In a film camera, the lens sends the light to the film strip, while in a digital camera (like DSLRs or mirrorless cameras), the lens directs light to a digital sensor.

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