rohit can clearly read his book only when it is placed at a minimum distance of 40cm from his eye. Find the nature and focal length of corrective lens so that he can read the book placed at a distance of 25cm from eye.
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lakshaykr:
ty!!! but its hypermetropia
i need the focal length
my teacher corrected hypermetropia in my exam but i was not able to find focal length
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