Question

Why we can see objects clearly closer than 25 cm?

Answer 1

Here is your answer-
To see an object placed at a distance of less than 25 cm, the ciliary muscles have to make the focal length still smaller which put strain on the ciliary muscles and they can not make the focal length so small.Hence it is not possible to see distance less than 25cm.
Hope it helps.

Answer 2

Explanation:

A normal eye is unable to clearly see the objects placed closer than 25 cm because the ciliary muscles of eyes are unable to contract beyond a certain limit.