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A child cannot read words on the blackboard clearly. The likely defect and correction are:
Answer & Solution
Correct answer: A.
1. Difficulty seeing distant objects → far point lies closer than infinity → myopia.
2. Myopia is corrected by a concave (diverging) lens of appropriate power.
3. The lens pushes the image back onto the retina.
_Source: NCERT Class 10 Science, Ch 10 "The Human Eye and the Colourful World", §10.2_
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