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Q.

The velocity of sound in a vacuum is__


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a

330 m/s

b

340 m/s

c

Zero

d

None of these 

answer is C.

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Detailed Solution

The velocity of sound waves in a vacuum is zero.
Longitudinal waves transmit energy from one point to another inside a medium. Also known as compression waves, these waves are comprised of compression and rarefaction. Longitudinal waves can exist in every medium. These waves may propagate through solids, liquids, and gas. Longitudinal waves cannot travel in a vacuum as there is no medium. Since sound waves are longitudinal waves, the velocity of sound in a vacuum will be zero.
 
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