A person need lence of power - 4.5 D for correction of her vision (a) what kind of defect in vision is she suffring from? (b) what is the focal length of the correction lens ? (c) what is the nature of the corrective lense ?
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(a)He is suffering from myopia.
(b)The focal length of the corrective lens must be infinity.
(c)It is a concave lens.
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