Tardigrade
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Tardigrade
Question
Physics
A photon of energy 10.5 eV is allowed to interact with a hydrogen atom in its ground state. Then :
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Q. A photon of energy
10.5
e
V
is allowed to interact with a hydrogen atom in its ground state. Then :
Atoms
A
the photon is completely absorbed by the H-atom
B
the photon cannot excite the H-atom and comes out with energy 10.5 eV
C
the photon transfers 10.2 eV energy to H-atom exciting it to first excited state
D
none of these
Solution:
Due to quantum nature, photon is absorbed only if its energy is eqaual to any of the transition energies other wise it will not be absorbed