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Which of the following statements regarding a 2-level atomic system is incorrect? A. At thermal equilibrium in room temperature, the number of spontaneous emissions far exceed stimulated emissions. B. Larger is the spontaneous emission lifetime, faster is the decay of excited atoms. C. As temperature increases, the ratio N2/N1 also increases.D. The ratio of Einstein coefficients (A/B) is inversely proportional to λ3. |
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