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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveStanding waveEasy2 minPYQ_2020

PhysicsEasysingle choice

The fundamental frequency of open pipe is 'n'. If it is closed from one end then frequency of the $2^{nd}$ harmonic of closed pipe is higher by $200 Hz$ than $^{'} n^{'}$ . The value of 'n' is

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Solution:

$n = \frac{v}{2 ℓ}$ $2^{nd}$ harmonic $= 1^{st}$ overtone $= (2 p + 1) n_{0} = 3 n_{0}$ $\frac{3 v}{4 ℓ} - \frac{v}{2 ℓ} = 200$ $\frac{v}{2 ℓ} (\frac{3}{2} - 1) = 200$ $\frac{v}{2 ℓ} = 400$

Stream:MHT_CETSubject:PhysicsTopic:Sound WaveSubtopic:Standing wave

⏱ 2mℹ️ Source: PYQ_2020

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