Teaching NVS PGT 2024 Test Series Physics Atoms De Broglie’s Explanation of Bohr’s Second Postulate of Quantisation
What is the de Broglie wavelength of an electron, whose kinetic energy is 120 eV ?
(Given: m = 9.11 x 10-31 kg, h = 6.63 x 10-34 Js, 1eV = 1.6 x 10-19 J)
1
100 nm
2
0.112 nm
3
0.8 nm
4
0.5 nm