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NEET2015PhysicsAtomic PhysicsActual

In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series to the longest wavelength in the Balmer series is:

Options

  1. A9 4
  2. B27 5
  3. C5 27
  4. D4 9

Correct answer

C. 5 27

Step-by-step solution

1 λ 1 = R e 1 1 2 - 1 2 2 1 λ 2 = R e 1 2 2 - 1 3 2 λ 1 λ 2 = 5 27

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