Q A person is unable to read a book clearly when kept at a distance of 25cm from his - Science - The Human Eye and the Colourful World

Question

Q A person is unable to read a book clearly when kept at a distance
of 25cm from his eye Name the defect How can it be corrected ? Draw
ray diagrams for (i) defective eye (ii) Corrected eye and explain
them

Komal Shivnani · Accepted Answer

Dear student,
The defect is called as Hypermetropia or long sightedness or farsightedness in which the person is unable to see the nearby objects but can see the distant objects clearly.
.It is corrected by using the convex lens having a specific suitable focal length.

The ray diagram for a defective eye will be

The ray diagram for the corrected eye will be:

Regards

The ray diagram for the corrected eye will be:

Regards

Q. A person is unable to read a book clearly when kept at a distance of 25cm from his eye. Name the defect. How can it be corrected ? Draw ray diagrams for (i) defective eye (ii) Corrected eye and explain them.