If $\lambda $v, $\lambda $x and $\lambda $m represent the wavelengths of visible light, X-rays and microwaves respectively, then
${\lambda _m} > {\lambda _x} > {\lambda _v}$
${\lambda _m} > {\lambda _v} > {\lambda _x}$
${\lambda _v} > {\lambda _x} > {\lambda _m}$
${\lambda _v} > {\lambda _m} > {\lambda _x}$
