Short-sightedness can be corrected by using
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Convex lens
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Concave lens
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Convex-concave lens
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Concave-convex lens
B
Correct answer
Explanation
Myopia (short-sightedness) is corrected using concave lenses, which diverge light rays before they enter the eye. This compensates for the eye's excessive focusing power, allowing light to focus correctly on the retina for distant vision.