a men is wearing a glasses of focal length +1m . What can be the defect in the eye
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Means men is wearing a convex lens. So he has Hypermetropia defect in his eyes.
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Answer: hyperopia.
Explanation:
A converging lens has a positive focal length always. A converging lens is a convex lens which is thicker in the middle and thinner at the edges. The light from infinity converges at a focal point.
Such lens is used by the men having farsightedness that is hyperopia. These people have difficulty in seeing nearby objects. It can be corrected by using convex lens.
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