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Question

Hema viewed a certain object and found that it is not clearly visible to her. It was found that the image was formed by his eye lens 3cm away from the pupil of his eye.
Hema can correct this defect in her vision by using:
  1. Concave lens
  2. Bifocal lens
  3. Convex lens
  4. Plano-convex lens

A
Concave lens
B
Plano-convex lens
C
Bifocal lens
D
Convex lens
Solution
Verified by Toppr

Since the distance between the pupil and the retina is 2.3 cm and the image is formed at a distance of 3 cm from the pupil, it is obvious that the image is formed behind the retina. To correct this defect in vision, Hema needs to use a convex lens. As shown in the diagram, this would help in the formation of the image at the retina.
979709_284047_ans_b268f01bc8f24d2eb9b638495a3af325.png

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