1.

A convex mirror of focal length f produces animage (1/n)^(th) of the size of the object. Then the distance of the object from the mirror is

Answer»

nf
(n+1)F
(n-1)f
`(n/(n+1))f`

Solution :`v/U=m=1/n`
`THEREFORE v=u/n`
We have, `1/v+1/u=1/(f)`
`therefore n/u - 1/u =1/f`
or u=(n-1)f


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