When sound travels through air, the air particles:

vibrate along direction of wave propagation

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vibrate but not in any fixed direction

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vibrate perpendicular to direction of wave propagation

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do not vibrate

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Solution

The correct option is A vibrate along direction of wave propagation
Air have bulk property so it only transfers longitudinal wave. A sound wave in air propagates as a longitudinal wave, in the form of compression and rarefaction so medium particles vibrate in the direction of wave propagation.

Hence Option A

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Similar questions

Particles in a longitudinal wave vibrate perpendicular to the direction of the wave propagation.

What keeps the air molecules from continuing to travel in the direction of propagation of the sound wave?

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