What is meant by lenses?
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Answer:
a curved piece of glass that makes things look bigger, clearer, etc. when you look through it
Explanation:
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Answer:
Lenses are basically magnifying glasses with curved sides. A lens is a piece of transparent glass which concentrates or disperses light rays when passes through them by refraction. Due to the magnifying property, lenses are used in telescopes and other magnifying devices. They are employed in cameras for gathering the light rays.In cameras, not one, but a group of lenses are used for the gathering of light. Magnification of a lens is the relation between the size of the image formed and the size of the object. Lenses can also be used in groups in order to avoid the blurriness or distortion caused to the image formed by the lens.