One of your friends in your class is wearing a convex lens to correct his vision. He is suffering from which of the following visual defects?

Cornea

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Eye lens

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Iris

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Retina

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Solution

The correct option is B
Eye lens

As your friend is wearing a convex lens to correct his vision, he is suffering from hypermetropia. In this defect, the person is not able to see objects which are near him as the image is formed behind the retina. This is corrected using a convex lens. Convex lens, which is a converging lens, shifts the image onto the retina. The figure below depicts the correction of hypermetropia.

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A far point person suffering from myopia is 2m from the eye. Find the the focal length and power of corrective lens that will correct his vision.

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