A proton and an electron are each accelerated from rest through the same potential…
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
A proton and an electron are each accelerated from rest through the same potential difference. Which statement about their de Broglie wavelengths is correct?
(a) Both particles acquire the same de Broglie wavelength.
(b) The electron has a longer de Broglie wavelength than the proton.
(c) The proton has a longer de Broglie wavelength than the electron.
(d) The proton has a longer de Broglie wavelength only if the accelerating potential exceeds 1kV.