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A convex lens of focal length f is place...

A convex lens of focal length `f` is placed somewhere in between an object and a screen. The distance between the object and the screen is `x`. If the numerical value of the magnification produced by the lens is `m`, then the focal lnegth oof the lens is .

A

`(mx)/((m+1)^(2))`

B

`(mx)/((m-1)^(2))`

C

`((m+1)^(2))/(m) x`

D

`((m-1)^(2))/m x`

Text Solution

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The correct Answer is:
A
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