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A concave lens is used to correct the ...

A concave lens is used to correct the defect of __________

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(i) In Myopia, the curvature of the cornea and eye lens increases. Due to this, converging power of lens remains large.
(ii) Also the eyeball elongates so that the distance between the lens and retina increases.
(iii) A concave lens of suitable focal length can create required divergence, hence, after convergence by eve lens sharp image of the distant object is formed on the retina and the defect is be corrected
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