Sometimes when a vehicle is driven at a particular speed, a rattling sound is heard. Explain briefly, why this happens and give the name of the phenomenon taking place.
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Solution
When the frequency of engine becomes equal to frequency of some parts of vehicle then a rattling sound is produced. This happens due to a phenomenon is known as resonance. Resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at a specific preferential frequency.