Question

why is an normal eye can't focus on an object placed within 10cm from eye?

Answer 1

To see on object placed at a distance of less than 25cm, the ciliary muscles have to make the focal length still smaller, Which puts strain on the ciliary muscles and they cannot make the focal length so small. Hence it is not possible to see distance lens then 25 cm.

Answer 2

Hey friend!!


Here's ur answer..

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One's eye can never focus on an object placed within 10cm from eye because this distance is very less than the near point of the eye.

The near point for a normal human eye is 25cm.


Far point for the same eye is infinity.

So, one's eye can see as far as possible but can't focus on any object whose distance is less than 25 cm.


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Hope it may help you....




Thank you :) :))