\(\Rightarrow \frac{1240}{300} \mathrm{eV}-2.13 \mathrm{eV}=\mathrm{eVs}\)
\(\Rightarrow 4.13 \mathrm{eV}-2.13 \mathrm{eV}=\mathrm{eVs}\)
\(\Rightarrow \text { So, } \quad \mathrm{V}_5=2 \mathrm{volt}\)
$E$ ( $eV$ માં) $ = \frac{{1237}}{{\lambda \left( {in\,nm} \right)}}$