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

Correct answer

6

Step-by-step solution

h c λ = 12370 970 - 13.6 + 12.7 = - 13.6 n 2 n 2 = 16 n = 4 Number of lines = n C 2 = 6

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