Out of electron and proton which one will have, a higher velocity to produce matter waves of the same wavelength? Explain it.


From de-Broglie equation, wavelength, λ=hmv
For same wavelength for two different particles, i.e., electron and proton, m1v1=m2v2 (h is constant). Lesser the mass of the particle, greater will be the velocity. Hence, electron will have higher velocity.