A) Kinetic energy
B) Potential energy
C) Angular momentum
D) Linear momentum
Correct Answer: C
Solution :
From Bohrs postulate electrons can revolve only in those orbits in which their angular momentum is an integral multiple of\[\frac{h}{2\pi },\]where h is Plancks constant. If n is mass of eletron and it be revolving with velocity v in an orbit of radius r, then its angular momentum will be\[mvr\]. According to this postulate\[mvr=\frac{nh}{2\pi }=J\]where h is an integer. Thus, angular momentum takes discrete values.
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