Define lateral magnification.

The mirror formula is the same,irrespective of whether the mirror is a convex mirror or a concave mirror.

In Section $I$, the magnification of the image obtained by placing an object at various distances in front of a concave mirror is mentioned, and in Section $II$, the type and size of the image are mentioned. Which of the following is the correct pair connecting Section $I$ and Section $II$?

Section $I$	Section $II$
$1.$ Magnification $(-1)$	$a.$ Real and enlarged
$2.$ Magnification $(+5)$	$b.$ Real and same size as object
$3.$ Magnification $(-5)$	$c.$ Real and diminished
$4.$ Magnification $(-0.5)$	$d.$ Virtual and enlarged

At what position should an object be placed in front of a concave mirror to obtain a magnification of $(- 2)$?

The magnification in a plane mirror is always ........

Does the magnification equation change depending on whether the lens is a concave lens or a convex lens?