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  4. A hydrogen atom in ground state absorbs 12.1 eV energy. The orbital angular momentum of electron is increased by:

Q. A hydrogen atom in ground state absorbs energy. The orbital angular momentum of electron is increased by:

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Solution:

is the difference in energies of and for hydrogen atom so the electron is excited to state hence the angular momentum will become from hence the increase in angular momentum is given in option (B).

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(B) The speed of the in the orbit is times that of the electron in the orbit.
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(D) The momentum of the muon in the orbit is times more than that of the electron.

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