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a person suffering from short sighted Ness can see clearly only upon a distance of 2m. find the nature & power of the lens required to correct his vision |
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Answer» Here, u = - infinity, v = - 2m (or -200cm) 1/f = 1/v - 1/u 1/f = -1/2 + 1/infinity therefore, f=-2m P = 1/f = -1/2 = - 0.5 D hence power of lens req is - 0.5 D |
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