Which are will have, a higher velocity to produce matter waves of the same wavelength?

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

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

It travelling at same speeds, which of the following matter waves have the shortest wavelength?

If travelling at same speeds, which of the following matter waves have the shortest wavelength?