Question

a proton and an alpha particle are accelerated through the same potential difference. which one of the two has (I) greater de broglie wavelength and less kinetic energy justify ur answer

Answer 1

As the de Broglie wavelength is inversely proportional to the mass so in the case of proton and Alpha particle the proton is lighter than that of Alpha particles so so Proton will have greater de Broglie wavelength but in the case of kinetic energy the Alpha particles will have more kinetic energy than proton .