Q. 14.7( 3 Votes )

Explain the working of a microwave oven.

Answer :

The diagram of microwave is given below:


i. Microwave is used to cook the food. In it, microwaves, are passed through the molecules of the food.


ii. These microwaves are produced by a device called a magnetron within the microwave oven.


iii. All food items contain water. The frequency of microwaves, causes the water molecules to vibrate, as a result, this movement generates heat.


iv. When the temperature rises, the molecules of water travel or vibrate or rotate with higher energies. The frequency of rotation of water molecules is about 3 gigahertz (300 crore hertz).


v. If water receives microwaves of this frequency, its molecules absorb this radiation and water gets heated up. In this way the food gets heated up in a microwave oven.


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