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The displacement at a point due to two waves are given by $y_{1} = 2 \sin (50 π t)$ and $y_{2} = 3 \sin (58 π t)$ number of beats produced per second is

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answer is B.

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Detailed Solution

$w_{1} = 50 π, w_{2} = 58 π$
Frequency of 1^st wave $n_{1} = 25$
Frequency of 2^nd wave $n_{2} = 29$
Beat frequency $= n_{2} - n_{1} = 29 - 25 = 4$

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