An electron and a proton are moving with the same kinetic energy in vacuum
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
An electron and a proton are moving with the same kinetic energy in vacuum. Which statement about their de Broglie wavelengths is correct?
(a) The electron has a smaller de Broglie wavelength than the proton.
(b) Both particles have the same de Broglie wavelength.
(c) The proton has a smaller de Broglie wavelength than the electron.
(d) The de Broglie wavelengths cannot be predicted without knowing their velocities.