defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Physics Atoms De Broglie’s Explanation of Bohr’s Second Postulate of Quantisation
The energy that should be added to an electron to reduce its de Broglie wavelength from one nm to 0.5 nm is _______
1
four times the initial energy
2
equal to the initial energy
3
twice the initial energy
4
thrice the initial energy