Ans. Distance of image from wall $(v)= -35 cm$
focal length $(f)= -10 cm$
$ from \,\, Mirror \,\, formula \,\, \frac{1}{u}=\frac{1}{f}-\frac{1}{v} $
$$\therefore \frac{1}{u}=\frac{1}{-10}-\frac{1}{-35}$$
$$ \frac{1}{u}=\frac{-25}{350} $$
$$ u= -14 cm$$
Distance of Object from Wall $= 35-14=21 cm $