Sound is a form of energy.It needs a medium to travel.It means sound cannot oscillations.When a body moves to and fro it is stalled oscillation.When the guitar is strung,its strings vibrate,which produce sound.When the wings of a bee or a mosquito vibrate,it produces sound.When the tight skin of a medal vibrates it produces sound when a tuning fork prongs are hit on a rubber pad it vibrates and produces sound.
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