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L. (a) A student is unable to see clearly the words written on the black boardplaced at a distance of approximately 3 m from him. Name the defectof vision the boy is suffering from. State the possible causes of thisdefect and explain the method of correcting it.

Answer»

THE PERSON IS SUFFERING FROM MYOPIA.CAUSES: 1. EXCESSIVE CURVATURE OF EYE LENS.2. ELONGATION OF EYE BALL.THIS DEFECT CAN BE CORRECTED BY USING A CONCAVE LENS OF APPROPRIATE POWER ...

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