Nitin Gupta , asked a question
Subject: Science , asked on 16/2/10

If far point or near point of a person's eye is given how to calculate Power of lens required for the person?

Jilin Rachel Abraham , added an answer, on 16/2/10
34 helpful votes in Science

If far point is given take that as the image distance[v]...and object distance[u] as infinity...& if near pt is giiven take 'u' as 25cm, thn use the lens formula to find the focal length....also remember 1infinity=0.....after getting the focal length substitute tht value in the formula 1f to get the power of the lens...


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