What is the nature of the image formed for an object placed on the principal axis of a concave mirror between the pole and the focus?

The minimum distance between the object and its real image for a concave mirror is

The focal length of a concave mirror is $f$ and the distance from the object to the principal focus is $x$. The magnification will be:

All of the following statements are correct except (for a real object):

You are asked to design a shaving mirror assuming that a person keeps it $10\,cm$ from his face and views the magnified image of the face at the closest comfortable distance of $25\,cm$. The radius of curvature of the mirror would then be.....$cm$.

$A$ mobile phone lies along the principal axis of a concave mirror,as shown in the figure. Show by a suitable diagram,the formation of its image. Explain why the magnification is not uniform. Will the distortion of the image depend on the location of the phone with respect to the mirror?