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Answer:
What is the principle of microwave?
The Microwave Heating Principle
Microwave heating is a multiphysics phenomenon that involves electromagnetic waves and heat transfer; any material that is exposed to electromagnetic radiation will be heated up. The rapidly varying electric and magnetic fields lead to four sources of heating.
Microwave radiation lies close to radio-frequency radiation in the electromagnetic spectrum, with operating frequencies in the 900–2450 MHz range. Water molecules are intrinsically polar in terms of charge distribution and when subjected to oscillating microwave radiation they rapidly vibrate within the field.
Explanation: