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  4. An electron in the ground state of Hydrogen atom goes to an excited state by absorbing 12.1 eV energy. In the course of it's transition to lower energy states, the possible number of spectral lines will be

Q. An electron in the ground state of Hydrogen atom goes to an excited state by absorbing eV energy. In the course of it's transition to lower energy states, the possible number of spectral lines will be

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Solution:

Let electron rises to state by absorbing



since


i.e., electron rises to state.
The number of possible spectral lines emitted during its transmission to ground state is

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