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A short sighted person cannot see clearl...

A short sighted person cannot see clearly beyond 2m. Caclulate the power of lens required to correct his vision.

Text Solution

Verified by Experts

Image distance , `vartheta=-2 ` m, u=`oo`
`1/f=1/vartheta -1/u implies 1/(-2) -1/oo implies 1/f=1/(-2)`
`therefore f=-2m" " therefore P=1/(-2)=-0.5 D`
OR
f=-D
`P=1/(-D) implies 1/(-2) =-0.5` Diaptors
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