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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveBeatsMedium2 minPYQ_2009

PhysicsMediumsingle choice

Beats are produced by two waves given by $y_{1} = a sin 2000 π t$ and $y_{2} = a sin 2008 π t$ . The number of beats heard per second is

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Solution:

Number of beats per second $= n_{1} \sim n_{2}$ $ω_{1} = 2000 π = 2 π n_{1}$ $\Rightarrow and \Rightarrow n_{1} = 1000 ω_{2} = 2008 π = 2 π n_{2} n_{2} = 1004$ Number of beats heard per second $= 1004 - 1000 = 4$

Stream:MHT_CETSubject:PhysicsTopic:Sound WaveSubtopic:Beats

⏱ 2mℹ️ Source: PYQ_2009

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