The underlying principle of laser operation is
Correct answer: C. stimulated emission
- A. induced absorption
- B. spontaneous emission
- C. stimulated emission
- D. all
Explanation
C is the right option The underlying principle of laser operation is stimulated emission. In a laser, the process of stimulated emission amplifies light through the emission of photons that are coherent and in phase with each other
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About Atomic Spectra
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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