Q 12-11-097JEE MainJEE Main 2023 (8 Apr, Shift 1)Easy
Proton (P) and electron (e) will have same de-Broglie wavelength when the ratio of their momentum is (assume $m_p=1849\,m_e$)
Answer: (A) $1:1$
$\lambda=\dfrac hp$: equal wavelengths need equal momenta, ratio $1:1$.
Solution by Sreeraj P, M.Sc Physics