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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 given to hydrogen atom in this inelastic collision is (neglect the motion of hydrogen atom)

A

12.1 eV

B

10.2 eV

C

12.75 eV

D

10 eV

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The correct Answer is:
A
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