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A hydrogen atom in its ground state is irradiated by the light of wavelength 970 . Taking hc / e = 1.237 10-6 eV

A hydrogen atom in its ground state is irradiated by the light of wavelength 970 Å. Taking hc / e = 1.237 × 10-6 eV m and the ground state energy of hydrogen atom as -13.6eV the number of lines present in the emission spectrum is.

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