Hydrogen atom in ground state is excited by a monochromatic radiation of λ = 975 Å. Number of spectral lines in the resulting spectrum emitted will be:
Text Solution
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C
Energy of the photon, 
After absorbing a photon of energy 12.75 eV, the electron will reach to third excited state of energy -0.85 eV, since energy difference corresponding to 
and 
is 12.75 eV.
∴ Number of spectral lines emitted
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