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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveBeatsMedium2 minPYQ_2021

PhysicsMediumsingle choice

Two waves $Y_{1} = 0.25 sin 316 t$ and $Y_{2} = 0.25 sin 310 t$ are propagating in same direction. The number of beats produced per second are

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Solution:

$y_{1} = 0.25 sin 316 t, y_{2} = 0.25 sin 310 t ∴ 2 π f_{1} = 316 and 2 π f_{2} = 310 ∴ f_{1} = \frac{316}{2 π} = \frac{158}{π} f_{2} = \frac{310}{2 π} = \frac{155}{π} ∴ Beat frequency = f_{1} - f_{2} = \frac{158}{π} - \frac{155}{π} = \frac{3}{π}$

Stream:MHT_CETSubject:PhysicsTopic:Sound WaveSubtopic:Beats

⏱ 2mℹ️ Source: PYQ_2021

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