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2014-08-05T04:27:19+05:30

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A virtual image of the same size almost - may be formed very close to the object distance itself. image is perhaps erect
 power of lens = 1/f = 100/30 =  3.3 dioptre
u and v are very smalll and close to 0.  v = 0  u=0  f = 30cm

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