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Q.

Is it true that sound waves require a medium to propagate?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
Sound is a mechanical wave that requires a medium to propagate. Mechanical waves travel in the form of compressions and rarefactions. Light is an electromagnetic wave that travels in the form of a crest and trough. It does not require any material medium to propagate.
 
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