Q. Identity the correct statement (Solved)
1. Only some substances emit radiation
2. A substance will emit radiation at a particular wavelength only
3. Quality and quantity of radiation depends on the properties of the material only
4. All substances emit radiation the quality and quantity depends on the absolute temperature and the properties of the material composing the radiating body
5. Bodies black in colour are known as black bodies
- d. All substances emit radiation the quality and quantity depends on the absolute temperature and the properties of the material composing the radiating body