Physics - Modern Physics Question with Solution | TestHub

If ${}^{\prime }{\lambda }_1$ ' and ' ${\lambda }_2$ ' are the wavelengths of de-Broglie waves for electrons in first and second Bohr orbits in hydrogen atom, then $\left(\frac{{\lambda }_1}{{\lambda }_2}\right)$ is equal to (Energy in $1^{\text{st }}$ Bohr orbit $=-13.6\mathrm{eV}$ )