\(\frac{{P_1^2}}{{P_2^2}} = \frac{1}{2} \Rightarrow \,\frac{{{P_1}}}{{{P_2}}} = \frac{1}{{\sqrt 2 }}\,\,\,\,\therefore \,\,\,\,\,\,\frac{{{\lambda _1}}}{{{\lambda _2}}} = \frac{{{P_2}}}{{{P_1}}} = \sqrt 2 \)
\( \Rightarrow \,\,\,\,\,\frac{{{\lambda _2}}}{{{\lambda _1}}} = \frac{1}{{\sqrt 2 }}\)
(Assume $\mathrm{h}=6.63 \times 10^{-34} \mathrm{~J} \mathrm{~s}, \mathrm{~m}_{\mathrm{e}}=9.0 \times 10^{-31} \mathrm{~kg}$ અને $\mathrm{m}_{\mathrm{p}}=1836$ $x$ $\mathrm{m}_{\mathrm{e}}$ ધારો)