Name of the defect of vision which can be corrected by a converging lens. Show clearly by a ray diameter how the lens corrects the defect.

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Solution

Hypermetropia is corrected using converging lens. In this defect the person is able to see far objects clearly but difficulty with near vision. The image is focused behind the retina rather than upon it. This occurs when eyeball is too short or the power of lens is too weak. By suing convex lens the defect is corrected.

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Similar questions

Q. Name the defect of vision which can be corrected by a diverging lens. Show clearly by a ray diagram how the lens corrects the defect.

What eye defect is hypermetropia? Describe with a ray diagram how this defect of vision can be corrected by using an appropriate lens.

Man A has a defect of vision due to which he cannot see the nearby objects clearly (through he can see the distant objects clearly). On the other hand, man B has a defect of vision due to which he cannot see the distant objects clearly (though he can see the nearby objects clearly). The defect in man A can be corrected by using spectacles containing lenses C whereas the defect in man B can be corrected by using spectacles containing lenses D.
(a) Name the defect of vision in man (i) A and (ii) B.
(b) What type of lenses are (i) C and (ii) D?

Q. A person finds difficulty in seeing nearby objects clearly. His vision can be corrected by using spectacles containing:
(a) converging lenses
(b) diverging lenses
(c) prismatic lenses
(d) chromatic lenses

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