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Q.

Is it true that sound is produced by your school bell by using a hammer?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
The vibration of particles produces sound. Sound waves travel through a medium. It does not move in a vacuum. As a result, it travels through the air. For example, the molecules begin to vibrate when the hammer is struck against the bell. When the bell disturbs the surrounding air, it causes these vibrations. The vibrating particles exert force on one another, causing disturbed air molecules to move forward and backwards. This back-and-forth motion of molecules produces sound, which reaches the ears.
 
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