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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveBeatsMedium2 minPYQ_2021

PhysicsMediumsingle choice

Two sound waves having wavelengths $5.0 m$ and $5.5 m$ propagates in a gas with velocity $300 m / s$ . The number of beats produced per second is

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Solution:

$λ_{1} = 5.0 m and λ_{2} = 5.5 m, v = 300 m / s n_{1} = \frac{V}{λ _{1}} = \frac{300}{5} = 60 Hz n_{2} = \frac{V}{λ _{2}} = \frac{300}{5.5} = 54.5 Hz ≃ 54 Hz$ Number of beats $= n_{1} - n_{2} = 60 - 54 = 6 Hz$

Stream:MHT_CETSubject:PhysicsTopic:Sound WaveSubtopic:Beats

⏱ 2mℹ️ Source: PYQ_2021

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