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12. A 14-year-old student is not able to see clearly the questions written of the black boardplaced at a distance of 5 m from him.(a) Name the defect of vision he is suffering from?(b) Draw the diagram to show this defect?(c) Name the type of lens used to correct this defect?(d) Name two possible causes of this defect.(e) Draw the diagram to show how this defect can be corrected.

Answer»

Short sightnessHe must use diverging lens



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