JEE Main 2026 — Dual Nature of Matter Question with Solution

The de Broglie wavelength associated with an electron accelerated through a potential difference V is ${\lambda }_e$ and the de Broglie wavelength associated with a proton accelerated through the same potential difference is ${\lambda }_p$. If their corresponding masses are $m_e$ and $m_p$, respectively, then the ratio of their de Broglie wavelengths $\left(\frac{{\lambda }_e}{{\lambda }_p}\right)$ is ______.