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An electron in hydrogen atom makes a tra...

An electron in hydrogen atom makes a transition `n_1 rarr n_2` Where `n_1 and n_2` are principal quantum numbers of the two states . Assuming Bohr's model to be valid the time period of the electron in the intial state is eight times that in the final state. The possible values of `n_1` and `n_2` are:

A

`n_1= 1 and n_2= 2`

B

` n_1 = 6 and n_2= 2`

C

`n_1 = 8 and n_2 = 1`

D

`n_1 = 8 and n_2= 2`

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