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A person needs a lens of power 2.5 D for correction of her vision. Then
i) Focal length of the lens is 40 cm
ii) Focal length of the lens is – 40 cm
iii) Nature of the lens is concave
iv) Nature of the lens is convex
v) She is suffering from myopia

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Only ii and iii are correct

Only i, iii and v are correct

Only i and iv are correct

Only i and v are correct.

answer is A.

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Only i and iv are correct

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