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The electron in a hydrogen atom jumps fr...

The electron in a hydrogen atom jumps from ground state to the higher energy state where its velcoity is reduced to one-third its initial value. If the radius of the orbit in the ground state is `r` the radius of new orbit will be

A

`3 r`

B

`9r`

C

`(r )/(3)`

D

`(r )/(9)`

Text Solution

Verified by Experts

The correct Answer is:
B
`v = (1)/(137)(c )/(n)` or `prop(1)/(n)`
Since `v` is reduced to one-third therefore
`n = 3`
Now, `r prop n^(2)`.
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Knowledge Check

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