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The electron in a hydrogen atom makes a transition ` n_1 to n_2` wher `n_1` and ` n_2` are the principal quantum numbers of the two states . Assume the Bohr model to be valid the time period of the electron in the initial state is eight times that in the final state . The possible values of ` n_1` and `n_2` are :

A

`n_1= 6 , n_2 = 3`

B

`n_1 = 8 , n_2 = 2`

C

`n_1 = n_2 = 1`

D

`n_1 = 8 , n_2 = 1`

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The correct Answer is:
A
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