Calculate the power of lens of the spectacles necessary to rectify the defect of nearsightedeness fof a person who could see clearly onlyup to a distance of 1.8 m.

Calculate the power of lens of the spectacles necessary to rectify the

1.	Calculate the power of lens of the spectacles necessary to rectify the defect of nearsightedeness fof a person who could see clearly onlyup to a distance of 1.8 m.
Answer» <P> Solution :The maximumdistance the person COULD SEED is, x = 1.8 m The lens should have a focallength of f = - x m = - 1.8 m it is a concaveor diverging lens. The POWER of the lens is, `P = (1)/(1.8m)` = 0.56 diopter

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Calculate the power of lens of the spectacles necessary to rectify the defect of nearsightedeness fof a person who could see clearly onlyup to a distance of 1.8 m.

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