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Three photons coming from excited atoms ...

Three photons coming from excited atoms hydrogen sample are picked up .There energies are `12.1eV, 10.2eV and 1.9eV` these photons must come from

A

a single atom

B

two atoms

C

three atoms

D

either two atoms or three atoms

Text Solution

Verified by Experts

The correct Answer is:
D
`(12.1=E(n=3)-E(n=1))/(10.2=E(n=2)-E(n=1))`
` 1.9=E(n=3)-E(n=2)`
At least two transition must involved as there can not be two transition from same level from same atom
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