Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Atoms De Broglie’s Explanation of Bohr’s Second Postulate of Quantisation
The de Broglie wavelength of a proton and α-particle are equal. The ratio of their velocities is:
1
4 : 1
2
4 : 2
3
4 : 3
4
More than one of the above
5
None of the above