Power of convex lens of focal length 50 cm is
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The focal length of a convex lens is 50 cm. what is its power?
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Power of a lens is always reciprocal to the focal length. So, aconvex lens with 50cm focal length has a power of (1/0.5) Dioptre(D) or 2D. Since, a convex lens is a converging lens, thepower of the convex lens is +2D.........
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