Q.

Is it true that sound waves are called mechanical waves?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
Sound waves are classed as mechanical waves because they pass through a physical medium such as air, liquids like water, or metals like silver. A sound wave's frequency is defined as the number of rarefactions and compressions per unit of time. The fact that a mechanical wave must propagate through a physical medium such as air, water, or metal defines it. Therefore, the propagation of sound waves necessitates the use of a medium. A mechanical wave of vibration that travels through a medium is referred to as sound.
 
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