Name any two defects of vision which can be corrected by using spectacles.

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Solution

Myopia and hypermetropia are two defects of vision that can be corrected by using spectacles.

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Q. Name any two defects vision which can be corrected by using spectacles.

Q. The defect of vision which cannot be corrected by using spectacles is :
(a) myopia (b) presbyopia (c) cataract (d) hypermetropia

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. The defect hypermetropia of an eye can be corrected by using spectacles containing ....................... lens.

A boy uses spectacles of focal length -50 cm. Name the defect of vision he has.

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