Q. 7

The distance of the eye-lens from the retina is x. For a normal eye, the maximum focal length of the eye-lens
A. = x

B. <x

C. >x

D. = 2 x.

Answer :

Let the far point where object is placed u be infinity ,u= ∞


Distance between eye-lens and retina = v = x(given)


Then using lens formula, the maximum focal length can be calculated as-




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