Write the equation and definition of lateral magnification for a lens.

(N/A) Lateral magnification $(m)$ for a lens is defined as the ratio of the height of the image $(h')$ to the height of the object $(h)$.
Mathematically,it is expressed as:
$m = \frac{h'}{h}$
For a thin lens,this can also be expressed in terms of the image distance $(v)$ and the object distance $(u)$:
$m = \frac{v}{u}$
Where:
$h'$ = height of the image
$h$ = height of the object
$v$ = distance of the image from the optical center
$u$ = distance of the object from the optical center