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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveStanding waveEasy2 minPYQ_2020

PhysicsEasysingle choice

In resonance tube of length $0.8 m$ , air column vibrates with a source of frequency $375 Hz$ for a certain height of water from bottom of the tube. Water level corresponding to fundamental frequency is (Neglect end correction, speed of sound in air = $330 m / s$ )

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Solution:

$ℓ = 0.8 m f = 375 Hz v = 330 m$ $n_{0} = \frac{v}{4 ℓ} = 375$ $∴ ℓ = \frac{330}{4 \times 375} = 0.22 m$ $∴ L - ℓ = 0.8 - 0.22 m = 0.58 m$

Stream:MHT_CETSubject:PhysicsTopic:Sound WaveSubtopic:Standing wave

⏱ 2mℹ️ Source: PYQ_2020

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