A) assumes that the angular momentum of electrons is quantized
B) uses Einsteins photoelectric equation
C) predicts continuous emission spectra for atoms
D) predicts the same emission spectra for all types of atoms
Correct Answer: A
Solution :
According to Bohrs hypothesis, electron can revolve only in those orbits in which its angular momentum is an integral multiple of\[\frac{h}{2\pi }\]where h being the Plancks constant. In these orbits, angular momentum of electron can have magnitude as\[\frac{h}{2\pi },\frac{2h}{2\pi },\frac{3h}{2\pi }.........\] etc, but never as\[\frac{1.5h}{2\pi },\frac{2.5h}{2\pi },\frac{3.5h}{2\pi }.........\]etc. This is called the quantisation of angular momentum.
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