For thin convex lens if magnification is...

For thin convex lens if magnification is one then object distance and image distances are .....

f,f

f,2f

2f,f

2f,2f

Text Solution

Verified by Experts

The correct Answer is:

B, D

Magnification for lens m =`v/u` but m=1
`thereforev=u`
`therefore1/f=1/v-1/u`[Taking v=u and u negative]
`therefore1/f=1/v+1/u`
`therefore1/f=2/v`
`therefore v=2f thereforeu=2f`

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