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A man cannot see clearly more than 100 m and less than 50 cm then Only one correct answerA.He is suffering from hypermetropiaB.Only convex lens is required for the eye correctionC.A bifocal lens of powers –0.01 D and +2 D is required for the eye correctionD.A bifocal lens of powers –0.02 D and +1.5 D is required for the eye correction

Question

A man cannot see clearly more than 100 m and less than 50 cm then Only one correct answerA.He is suffering from hypermetropiaB.Only convex lens is required for the eye correctionC.A bifocal lens of powers –0.01 D and +2 D is required for the eye correctionD.A bifocal lens of powers –0.02 D and +1.5 D is required for the eye correction

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Solution

The man is suffering from both hypermetropia and myopia. Hypermetropia is a condition where the person can see distant objects clearly but has difficulty in seeing nearby objects. On the other hand, myopia is a condition where the person can see nearby objects clearly but has difficulty in seeing distant objects.

In this case, the man cannot see clearly more than 100 m (indicating myopia) and less than 50 cm (indicating hypermetropia). Therefore, he would need a bifocal lens for eye correction.

A bifocal lens has two powers - one for correcting myopia (negative power) and one for correcting hypermetropia (positive power).

The exact powers required for the lens would depend on the severity of the man's conditions and should be determined by an optometrist. Therefore, without further information, we cannot definitively say whether a bifocal lens of powers –0.01 D and +2 D or a bifocal lens of powers –0.02 D and +1.5 D is required for the eye correction.

However, given the options, the answer would be either C or D.

This problem has been solved

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