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A student has difficulty in reading the ...

A student has difficulty in reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected ?

Text Solution

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As the child cannot see distant objects clearly it means that he is suffering from myopia or near-sightedness. In this case the child can see nearby objects clearly but cannot see far off objects distinctly as their images are formed before the retina.
To correct this defect, the child has to use spectacles with concave lens of suitable focal length.
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