Two vibrating tuning forks produce progressive waves given by y₁= 4sin 500 $π$ t and y₂ = 2sin 506 $π$ t. Number of beats produced per minute is

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180

360

answer is B.

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Detailed Solution

Number of beats per sec =
$n_{1} - n_{2} = \frac{506 π}{2 π} = \frac{500 π}{2 π} = 253 - 250 = 3$
Therefore number of beats produced per minute 3 x 60 = 180

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