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Image Formation by Convex Lens

51.The focal ...

Question

51.The focal length of a convex lens is 10cm.The magnifying powers when it is used as a magnifying glass to form the image at (i)near point and (ii)far point are ---------

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Solution

$P o w e r = \frac{100}{10} = 10 D F o r n e a r p o i n t, P = 10 D F o r F a r p o i n t, P = - 10 D$

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