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A hydrogen atom in ground state absorbs ...

A hydrogen atom in ground state absorbs `10.2eV` of energy .The orbital angular momentum of the electron is increases by

A

`1.05 xx 10^(-34) j - sec`

B

`2.11 xx10^(-34)` j -sec

C

`3.16 xx10^(-34)` j - sec

D

`4.2 xx 10^(-34)` j - sec

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The correct Answer is:
A
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