The power of lens depends upon focal length . discuss
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The power of a lens depends upon the curvature and focal length (f). The thick convex lens has more power than a thin one because the thick one has a greater curvature and less focal length
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Power of lens is the reciprocal of focal length. If power of lens increase focal length decrease. Therefore, if focal length is positive then power of lens is negative and when focal length is negative then power of lens is positive.
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