JIPMER 2011
- Exam
- JIPMER
- Year
- 2011
- Subject
- Physics
- Chapter
- Communication System
JIPMER 2011 · Physics · Communication System
The principle of LASER action involves
The principle of LASER action involves
Options
- Aamplification of particular frequency emitted by the system
- Bpopulation inversion
- Cstimulated emission
- 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