Question

if the magnification of the image formed by concave mirror is 1 then what will be position of object

Answer 1

the magnification of the image formed by concave mirror is there in the position of a object is

between optical centre and 'f' point

Answer 2

Hello mate,

Here is your answer,

$\frac{-v}{u} = m\\\frac{-v}{u} = 1\\\-v=u$

Object distance = image distance

$\frac{hi}{ho} = m\\\frac{hi}{ho} = 1\\\ hi=ho$

Height of object is equal to the height of image.

Therefore, the object is placed at the center of curvature of the concave mirror.

HOPE THIS HELPS UU :)

AND STAY BLESSED.