Why material medium is necessary for propagation of sound wave?

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Solution

Hi Viral!

Sound is produced by the vibration of objects. When objects vibrate, it collides with the molecules in the medium. This collision produces mechanical oscillations in the medium. Because of this, sound waves are known as mechanical waves. If there is no medium present, then the oscillations cannot propagate. So, for the propagation of a mechanical wave, a material medium is necessary.
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Sound waves need a medium for its propagation.

Three statements regarding the propagation of sound waves.

I Sound waves propagate through a series of crests and troughs.

II Sound waves require a material medium for their propagation.

III The propagation of sound waves is attributed to the motion of particles.

Among the given statements,

Describe in brief, with the aid of a labelled diagram, an experiment to demonstrate that a material medium is necessary for the propagation of sound.

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