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An electron collides with a hydrogen ato...

An electron collides with a hydrogen atom in its ground state and excites it to `n = 3` ,. The energy gives to hydrogen aton n this inclastic collision is [Neglect the recoiling of hydrogen atom]

A

10.2 eV

B

12.1 eV

C

12.5 eV

D

None of these

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The correct Answer is:
B
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