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O1P is the principal axis and O is the p...


`O_1P` is the principal axis and O is the point object. Given,
`O_1P=30cm, f=20cm` and `OP=2mm`. Find the image distance and its position.

Text Solution

Verified by Experts

For the given situation,

`u=-30cm`
and `f=+20cm`
Using the lens formula, we have
`1/v-1/-30=(1)/(+20)`
Solving this equation, we get
`v=+60cm`
Further, `m=v/u=(+60)/(-30)=-2`
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