Q. A photon of energy is allowed to interact with a hydrogen atom in its ground state. Then :

Atoms Report Error

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

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