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Questions  

An electron in a hydrogen atom makes a transition n1 → n2, where n1 and n2 are principal quantum numbers of the states. Assume the Bohr’s model to be valid. The time period of the electron in the initial states is eight times to that of final state. What is ratio of n1/n2

a
8 : 1
b
4 : 1
c
2 : 1
d
1 : 2

detailed solution

Correct option is C

T∝n3⇒T1T2=n1n23⇒8TT=n1n23∴n1: n2 = 2:1

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