If the far point of eye lens is 10 m, find power of the lens required to correct the defect.

Far point of the eye lens = v

v = -10 m


Object distance = u


u = ∞


Lens Formula:




Power of lens, P = 1/f


= -10 D


Hence the power of the lens required to correct the defect is -10 D. The lens used is a concave lens.


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