Take a rubber band. Put it around the longer side of a pencil box. Insert two pencils between the box and the stretched rubber. Now, pluck the rubber band somewhere in the middle. Do you hear any sound? Does the band vibrate?
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Yes, we hear the sound, when we pluck the stretched rubber band somewhere in the middle. Also, we find that the band is vibrating.
Thus, from this, we can conclude that all vibrating bodies produce sound.
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