describe a simple experiment to short that sound cannot propagate from volume
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- Take a jar ,put an electric bell inside it . ... *Turn on the bell . *You will notice that no sound can reach your ear.
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As the air is pumped out of the sealed bell jar, the sound from the bell jar fades. ... However, the sound is not audible to our ears because of the vacuum inside the jar. This demonstrates that the sound wave cannot travel through vacuum. That is, a sound wave needs a material medium for its propagation.
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