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For a person near point of vision is 100...

For a person near point of vision is 100 cm. Then the power of lens he must wear so as have normal vision, should be

A

`+ 1D`

B

`- 1D`

C

`+ 3D`

D

`- 3D`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`f=(yD)/(y-D)=(100xx25)/(100-25)=(100)/(3)cm=(1)/(3)cm,p=(1)/(f)=+3D`
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