The situation in which the excited state, i.e., metastable state, contains more number of electrons than the ground state is called
Correct answer: C. Population state
- A. Ionized state
- B. Stimulation state
- C. Population state
- D. All of these
Explanation
In population inversion, the metastable state contains more electrons than the ground state. This situation is crucial for the operation of lasers, where the population inversion allows for stimulated emission of photons.
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Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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