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A convex mirror of focal length f produc...

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

A

nf

B

`f//n`

C

`(n+1)f`

D

`(n-1)f`

Text Solution

Verified by Experts

The correct Answer is:
D
Let,` u= -x`
then `v= +(x/n)`
`(1)/((+x//n))+(1)/(-x)=(1)/(+f)`
solving, we get `x=(n-1)f`.
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