Q.

Is it true that sound waves cannot travel through vacuum?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
There are two types of waves, namely longitudinal and transverse. Longitudinal waves are the waves that require medium to travel and transverse waves are the waves that do not need any medium to travel. Since sound waves need a medium to travel, they are considered as longitudinal waves which means that they cannot travel through vacuum.
 
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