Question

Draw a ray diagram to show the correction of eye defect of an old man who cannot see an object placed closer than 1 m from his eye clearly.

Hint:

Cannot see near objects → Use convex lens (hypermetropia correction).

Answer 1

Defect Identified: This condition is hypermetropia (long-sightedness), common in old age (presbyopia). Correction:

• A convex (converging) lens is used.
• The convex lens converges light rays from a nearby object.
• It helps form the image on the retina.

Ray Diagram Description:

• Rays from a nearby object pass through a convex lens.
• The convex lens bends rays to converge before entering the eye.
• The eye lens then focuses them on the retina.