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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveBeatsEasy2 minPYQ_2020

PhysicsEasysingle choice

Two identical wires have the same fundamental frequency of $400 Hz$ when kept under the same tension. If the tension in one wire is increased by $2 %$ , the number of beats produced will be

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Answer:

Solution:

$n \propto \sqrt{T} \Rightarrow \frac{Δ n}{n} = \frac{1}{2} \frac{Δ T}{T}$

Beat frequency $= Δ n = (\frac{1}{2} \frac{Δ T}{T}) n = \frac{1}{2} \times \frac{2}{100} \times 400 = 4$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Sound WaveSubtopic:Beats

⏱ 2mℹ️ Source: PYQ_2020

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