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A photon was absorbed by a hydrogen atom...

A photon was absorbed by a hydrogen atom in its ground state and the electron was promoted to the fifth orbit. When the excited atom returned to its ground state, visible quanta were emitted when electron made transition.

A

`2 to 1`

B

`5 to 2`

C

`3 to 1`

D

`4 to 1`

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The correct Answer is:
A
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