\(\therefore 4.13=3.13+\mathrm{K} \cdot \mathrm{E}_{\max }\)
\(\therefore \mathrm{K} \cdot \mathrm{E}_{\max }=1 \mathrm{eV}\)
$\left(\mathrm{hc}=1240\; \mathrm{eV} \mathrm{nm}, 1\; \mathrm{eV}=1.6 \times 10^{-19} \;\mathrm{J}\right)$
[$1 eV=1.6\times 10^{-19}\,J$ આપેલ છે.]