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NEET 2004 (AIPMT) · Transitions, Photon Emission & Excitation

Transitions, Photon Emission & Excitation question from NEET 2004 (AIPMT)

Q77NEET 2004 · AIPMTEasy

Transitions, Photon Emission & Excitation

Energy EE of a hydrogen atom with principal quantum number nn is given by E=−13.6n2 eVE = \frac{-13.6}{n^{2}}\text{ eV}. The energy of a photon ejected when the electron jumps from n=3n = 3 state to n=2n = 2 state of hydrogen, is approximately

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Answer: (d)

  1. E=13.6(122−132)E = 13.6\left(\frac{1}{2^2}-\frac{1}{3^2}\right) eV
  2. E=13.6×536≈1.89E = 13.6 \times \frac{5}{36} \approx 1.89 eV
  3. So the answer is (d) 1.91.9 eV.
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