The glasses used for reading purposes are essentially lenses, while those used for seeing distant objects clearly are essentially lenses.

Concave, Plane

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Plane, Concave

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Concave, Convex

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Convex, Concave

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Solution

The correct option is D
Convex, Concave

The glasses used for reading purposes are essentially convex lenses, while those used for seeing distant objects clearly are essentially concave lenses.

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Similar questions

The glasses used for reading purposes are essentially ______lenses, while those used for seeing distant objects clearly are essentially ______ lenses.

Q. A man's near point is 0.5 m and far point is 3 m. Power of spectacle lenses required for (i) reading purposes, (ii) seeing distant objects, respectively, are

Q. A person cannot see distant objects clearly. His vision can be corrected by using the spectacles containing :
(a) concave lenses (b) plane lenses (c) contact lenses (d) convex lenses

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 can see clearly objects only when they lie between

50 cm

and

250 cm

respectively. The person uses a lens of power

2 D

, while reading at

25 cm

. With this lens, find the maximum distance clearly visible for the person?

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The glasses used for reading purposes are essentially ______lenses, while those used for seeing distant objects clearly are essentially ______ lenses.

The correct option is D Convex, ConcaveThe glasses used for reading purposes are essentially convex lenses, while those used for seeing distant objects clearly are essentially concave lenses.

The glasses used for reading purposes are essentially lenses, while those used for seeing distant objects clearly are essentially lenses.

The correct option is D
Convex, Concave

The glasses used for reading purposes are essentially convex lenses, while those used for seeing distant objects clearly are essentially concave lenses.