what are the uses of concave lens
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Binoculars and telescopes employ convex lenses to magnify objects and make them appear closer
Opticians use concave lenses to correct nearsightedness -- also called myopia.
Camera manufacturers use combinations of concave and convex lenses to improve the quality of photographs.
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A concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).
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