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A convex mirror of focal length f produc...

A convex mirror of focal length `f` produces an image `(1//n)^(th)` of the size of the object. The distance of the object from the mirror is

A

`(n-1)f`

B

`[(n-1)/(n)]f`

C

`[(n+1)/(n)]f`

D

`(n+1)f`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Magnification, ` m=+1/n=-u/vs`
`therefore` `v=-u/n`
From the mirror formula,
`1/f=(1)/((-(u)/(n)))+1/u`
The distance of the object of the mirror, u=-(n-1)f
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