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JIPMER2011PhysicsCommunication System

The principle of LASER action involves

Options

  1. Aamplification of particular frequency emitted by the system
  2. Bpopulation inversion
  3. Cstimulated emission
  4. DAll of the above

Correct answer

D. All of the above

Step-by-step solution

Laser action involves all the given phenomena (i) Amplification of particular frequency (ii) Population inversion (iii) Stimulated emission

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