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The power of spectacles lens required fo...

The power of spectacles lens required for a person is -5 dioptre when separation between spectacles and eye is 2 c. What will be the power of contact lens required by him?

A

`-5.25D`

B

`-4.54D`

C

`-3.2D`

D

`-5.75`D

Text Solution

Verified by Experts

The correct Answer is:
B
`f=100/(-5)=-20cm`
`1/f=1/v-1/u=1/(-22)-1/(oo)`
`f=-22cm`
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