Q. What is a laser? (Solved)
1. Electro-magnetic waves
2. Light amplification by stimulated emission of radiation
3. Supersonic waves
4. Green
5. Ultrasonic waves
- b. Light amplification by stimulated emission of radiation
1. Electro-magnetic waves
2. Light amplification by stimulated emission of radiation
3. Supersonic waves
4. Green
5. Ultrasonic waves