Question

The diagram below shows a special case of an eye defect.

1. What is the defect that is shown in the figure?
2. State one cause for such a defect?
3. Explain with reason if a concave lens can be used to correct the defect.

Answer 1

1. The image shows a case of hypermetropia.
2. Shortening the eyeball or focal length of the eye lens becomes too long.
3. No, the concave lens would diverge the rays coming to the eyeball and push the image even further, but a convex lens should be used to help converge the rays and create the image at the exact place on the retina.