Question

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4
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Numerical problems
A person with a myopic eye cannot see beyond 1.2m distinctly. What should be (3)
the power of corrective lens used to restore his proper vision?
The near point of Hypermetropic eye is 75cm from the eye. What is the power (3)
of the lens required to enable him to read clearly a book held at 25cm from the
eye?
The near point of Hypermetropic eye is 100cm from the eye. What is the power (3
of the lens which he requires to read clearly a book held at 25cm from the eye?
The far point of a person is 2m. Find the power and focal length of the lens (3
required to rectify this problem.
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Answer 1

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