Is it true that a Sound wave travels faster than a light wave?

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True

False

answer is B.

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Detailed Solution

The above statement is False.
Sound waves are mechanical waves which need a medium to propagate; thus, sound waves take time to reach from one molecule to another depending upon the type of medium it is travelling. And the light wave is a ray of the photon which doesn’t require a medium to propagate. Hence, light travels faster than sound waves. Light can travel through a vacuum at

3 \times 108 m / s

, and sound waves travel through the air at about

340 m / s

. For example, the flash of a gun can be seen at once and later the sound produced by it can be heard.
The correct statement would be that Sound waves cannot travel faster than light waves.

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