What are bi concave and bi convex lens?
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biconcave lens is formed out of two bulged out surfaces and bi convex lens is formed out of two bent in surfaces
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Explanation:
A biconvex lens is when both surfaces of the lens are convex. If the surfaces have identical curvature of radii then the lens will be called an equiconvex lens. A lens with two concave surfaces is simply called a biconcave lens.
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