Question

explain how sound is produced by your school bell?

Answer 1

Answer:

now days the school are using modern school bell is is new device which electro magnets in which a iron rod is placed and when we give it elcteric supply the iron rod attract the piece of iron which is working as a magnet due to electric supply

Answer 2

• Air is the commonest through which sound propagates. when school bell is rung , it pushes the molecules of the air in front of it. This in turn compresses the air, thus creating a region of high pressure and high density called compression. This compression in the air travels forward. when the bell moves back , it creates region of low pressure in the air, commonly called rarefraction. This region has low pressure, low density and more volume. As the bell continues to vibrate, the regions of rarefractions. These regions alternate at the same place. The energy of vibrating bell travels outward . This energy which reaches the ears , makes the eardrum to vibrate and thus we hear sound.

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