A real object is placed at a distance f from the pole of a convex mirror, infront of the convex mirror. If focal length of the mirror is f, then distance of the image from the pole of the mirror is

Options

A. `2 f`
B. `(f)/(2)`
C. `4 f`
D. `(f)/(4)`

Answer

B

Explanation

Distance of object from the pole of convex mirror u = -f
Distance of image from the pole of convex mirror v = ?
The focal length
`(1)/(f)=(1)/(u)+(1)/(v)" or "(1)/(f)=(1)/(-f)+(1)/(v)`
or `" "(1)/(v)=(1)/(f)+(1)/(f)`
or `" "v=(f)/(2)`