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Describe the formation of beats. |
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Answer» Solution :Formation of beats : When two more waves SUPERIMPOSE each other with SLIGHTLY different frequencies , then a sound of periodically varying amplitude at a point is observed . This phenomenon is known as beats . The number of amplitude maxima per second is called beat frequency . If we have two sources , then their DIFFERENCE in frequency GIVES the beat frequency . Number of beats per second `n = |f_(1) - f_(2)|` per second . |
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