Question 5

A proton, a neutron, an electron and an α-particle have same energy. Then their de Broglie wavelengths compare as

• (a)λp = λn > λe > λα
• (b)λα < λp = λn > λe
• (c)λe < λp = λn > λα
• (d)λe = λp = λn = λα