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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveBeatsEasy2 minPYQ_2020

PhysicsEasysingle choice

Two waves $Y_{1} = 0 \cdot 25 sin 316 t$ and $Y_{2} = 0 \cdot 25 sin 310 t$ are propagating along the same direction. The number of beats produced per second are

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Solution:

No. of beats $= n_{1} - n_{2}$ $Y_{1} = 0.25 sin 316 t$ $∴ \frac{2 π}{T} = 316 ∴ n_{1} = \frac{316}{2 π}$ $Y_{2} = 0.25 sin 310 t$ $∴ n_{2} = \frac{310}{2 π}$ $n_{1} - n_{2} = \frac{316 - 310}{2 π} = \frac{6}{2 π} = \frac{3}{π}$

Stream:MHT_CETSubject:PhysicsTopic:Sound WaveSubtopic:Beats

⏱ 2mℹ️ Source: PYQ_2020

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