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Hypermetropia and Its Correction

A person can ...

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A person can see clearly objects only when they lie between 50cm and 400cm from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use will be

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Q. A person can see clearly objects only when they lie between

50

400

cm from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use, will be?

Q. A person can see clearly objects only when they lie between

50 c m

400 c m

from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use, will be?

Q. A person can see clearly objects only when they lie between

50 cm

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?

Q. A person is able to see objects clearly only when these are lying at distances between 50 cm and 300 cm from his eye.
(a) What kind of defects of vision is he suffering from?
(b) What kind of lenses will be required to increase his range of vision from 25 cm to infinity? Explain briefly.

Q. A person can see clearly objects lying between

25 c m

2 m

from his eye. His vision can be corrected by using spectacles of power:

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Hypermetropia and Its Correction

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