If proton, electron and α-particle are moving with same kinetic energy then the order of their de-Broglie’s wavelength is
λp > λe > λα
λα > λp > λe
λα < λp < λe
λe = λp< λα
| λp > λe > λα |
| λα > λp > λe |
| λα < λp < λe |
| λe = λp< λα |