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A person with a myopic eye cannot see ob...

A person with a myopic eye cannot see objects beyond `1.2 m` distinctly. What should be the type of corrective lens used to restore proper vision ?

A

`+ 0.5 D`

B

`- 0.5 D`

C

`+ 0.2 D`

D

`-0.2 D`

Text Solution

Verified by Experts

The correct Answer is:
B
As the person can not see distinctly beyond `2 m`, he is suffering from myopia. To remove this defect, he has to use a concave lens of `f = -2 m`
`P = (1)/(f) = (1)/(-2) = - 0.5 D`.
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