Q.
A person can see objects clearly only upto a maximum distance of 60cm. His eye defect, nature of the corrective lens and its focal length are respectively
Range of vision for healthy eye is 25 cm to ∞. If the person can see clearly only upto a maximum distance of 60 cm. He is suffering from myopia. A short sighted eye can see only nearer objects. This defect can be removed by using a concave lens of suitable focal length f=60cm.