A convex mirror has a focal length `f`. A real object is placed at a distance `f` in front of it from the pole produces an image at

Options

A. Infinity
B. `f`
C. `f//2`
D. `2f`

Answer

C

Explanation

Here, forcal length`=f` and `u=-f`
On putting these values in `(1)/(f)=(1)/(u)+(1)/(v)`
`=(1)/(f)=-(1)/(f)+(1)/(v)impliesv=(f)/(2)`