Question

A person can see distant sign boards clearly but cannot read clearly a book which is at 25cm from his eye.

Answer 1

Answer:

Then he is farsighted.

Explanation:

So his lens can't thicken on contraction so the focal length does not shorten that much as it is required to make a clear image. Clear image is formed behind the retina.

Answer 2

Answer:

Explanation:A person is suffering

from the hyprrmetrpia (far sightedness )