What will be the magnification of the image of an object placed in the mid-point between the focus and the pole of a concave mirror?

Explanation

Equation of a concave mirror, `(1)/(v) + (1)/(u) = (1)/(f)`
`therefore " " (1)/(v) + (2)/(f) = (1)/(f) [therefore u = (f)/(2)]`
`or, " " (1)/(v) = (1)/(f) - (2)/(f) = - (1)/(f)`
`therefore` The image will be formed at a distance f behind the mirror.
`therefore` Magnification , `m = (v)/(u) = (f)/((f)/(2)) = 2`
[considering mode value of m]