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The following diagram indicates the energy levels of a certain atom when the system moves from 2 E level to E , a photon of wavelength λ is emitted. The wavelength of photon produced during its transition from 4 E 3 level to E is

Options

  1. Aλ 3
  2. Bλ 4
  3. C4 λ 3
  4. D3 λ

Correct answer

D. 3 λ

Step-by-step solution

When the transition is from 2 E to E , then the energy of photon having a wavelength, λ = h c λ So, 2 E - E = h c λ E = h c λ ... 1 When the transition is from 4 E 3 to E . Let, the wavelength of a photon be λ ' 4 E 3 - E = h c λ ' E 3 = h c λ ' ... 2 Divide equation 1 by 2 , E E 3 = h c λ h c λ ' λ ' λ = 3 So, λ ' = 3 λ

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