Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The time period of revolution of an electron in its ground state orbit in a hydrogen atom is 
. The frequency of the electron in its first excited state (in 
) is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Time period is proportional to 
.
Let 
be the time period in ground state and 
be the time period in it's first excited state.
(Where, 
excitation level and 2 is atomic no.)
Given,
So,
Frequency is given by 
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