Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Physics Atoms De Broglie’s Explanation of Bohr’s Second Postulate of Quantisation
An electron, an α-particle and a proton have the same kinetic energy. Which of these have longest de Broglie wavelength?
1
α-particle
2
proton
3
electron
4
both α-particle and proton