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Q. According to Bohr's postulates which of the following quantities takes discrete values?

BHUBHU 2005

Solution:

According to Bohr's postulates, electrons cannot revolve in all those orbits as suggested by classical theory, but only in those orbits for which the angular momentum is equal to an integral multiple of $ \frac{h}{2\pi } $ , where h is Planck's constant. Thus, angular momentum takes discrete values.