Question

The magnitude of the de-Broglie wavelength (λ) of electron (e), proton (p), neutron (n) and α-particle (α) all having the same energy of 1 MeV, in the increasing order will follow the sequence
(a) $\lambda_{e},\lambda_{p},\lambda_{n},\lambda_{\alpha}$
(b) $\lambda_{e},\lambda_{n},\lambda_{p},\lambda_{\alpha}$
(c) $\lambda_{\alpha},\lambda_{n},\lambda_{p},\lambda_{e}$
(d) $\lambda_{p},\lambda_{e},\lambda_{\alpha},\lambda_{n}$

Answer 1

[B] is the correct option