\({\lambda _{\rm{e}}}\, = \,\,\frac{h}{{\sqrt {2mE} }}\,\)
ઇલેકટ્રોનની તરંગલંબાઈ \(\therefore \,\,\frac{{{\lambda _{ph}}}}{{{\lambda _e}}}\,\, \times \,\,\frac{{\sqrt {2mE} }}{h}\,\, = \,\,c\sqrt {\frac{{2m}}{E}} \)
(ઇલેક્ટ્રોનનું દળ $=9.1 \times 10^{-31} \,{kg}$ )
$( h=6.6 \times 10^{-34} \;J\cdot sec)$
$\left(\mathrm{m}_{\mathrm{e}}=9 \times 10^{-31}\;\mathrm{kg}\right)$