\(\Rightarrow \frac{{{\lambda }_{photon}}}{{{\lambda }_{electron}}}=c\sqrt{\frac{2m}{E}}\)
\(\Rightarrow \frac{{{\lambda }_{photon}}}{{{\lambda }_{electron}}}\propto \frac{1}{\sqrt{E}}\)
$E$ ( $eV$ માં) $ = \frac{{1237}}{{\lambda \left( {in\,nm} \right)}}$
$\left(\mathrm{hc}=1240\; \mathrm{eV} \mathrm{nm}, 1\; \mathrm{eV}=1.6 \times 10^{-19} \;\mathrm{J}\right)$