the nature of eye lens is
(a)convex
(b) concave
(c) concave convex
(d) convex concave
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A concave lens diverge the light rays and increase the focal length whereas a convex lens converge the light rays and decrease the focal length. If the lens is curved at one face, it may be concave or convex and if curved at both faces, it may be biconcave or biconvex. ... It is biconvex i.e. convex faces from both sides.
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nature of eye lens is concave
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