Q. Which of the following gives nearly monochromatic light? (Solved)
1. Sodium vapour lamp
2. GLS lamp
3. Fluurescent tube
4. Mercury vapour lamp
5. None of the above
- a. Sodium vapour lamp
1. Sodium vapour lamp
2. GLS lamp
3. Fluurescent tube
4. Mercury vapour lamp
5. None of the above