1.

The time of revolution of an electron around a nucleus of charge Ze in nth Bohr orbit is directly proportional to [MP PET 2003]

A.            n    
B.            \[\frac{{{n}^{3}}}{{{Z}^{2}}}\]
C.            \[\frac{{{n}^{2}}}{Z}\]      
D.            \[\frac{Z}{n}\]
Answer» C.            \[\frac{{{n}^{2}}}{Z}\]      


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