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NEST2012PhysicsAtomic Physics

Consider a 3-level system with energies E₁, E₂ and E₃ in ascending order. ₁, ₂ and ₃ are the wavelengths of radiation corresponding to the transitions E₂ E₁, E₃ E₂ and E₃ E₁ respectively. The wavelengths are related by,

Options

  1. A₁= ₂ ₃ / ( ₃- ₂ ) .
  2. B₂= ₃- ₁ .
  3. C₂= ₁ ₃ / ( ₁+ ₃ ) .
  4. D₃= ₁ ₂ / ( ₁+ ₂ ) .

Correct answer

D. ₃= ₁ ₂ / ( ₁+ ₂ ) .

Step-by-step solution

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