What is the law of conservation of energy? How does it relate to energy exchanges between a thermodynamic system and its surroundings?
Solution: Electromagnetic radiations are the waves having both electric and magnetic fields associated with them. The arrangement of different types of electromagnetic radiations in the order of increasing wavelengths is called electromagnetic spectrum. The complete electromagnetic spectrum is given below: Step1: a) When the burner setting is changed to low, even then the glow continues but in the higher wavelength range, i.e., infrared region and hence is not visible to human eye. b) As the energy provided to the burner will be increased beyond the highest setting of the stove, the wavelength of the radiation emitted by the stove will be decreased. As a result, the colour of the glow changes from orange to yellow and so on. ------------------------