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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveStanding waveEasy2 minPYQ_2020

PhysicsEasysingle choice

A tuning fork of frequency $n$ is held near the open end of a tube, which is closed at the other end, and the length of the tube is adjusted until resonance occurs. If the two shortest lengths to produce resonance are $L_{1}$ and $L_{2}$ , then the speed of the sound is

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Answer:

Solution:

$n = \frac{v}{4 L_{1}}$ and $n = \frac{3 v}{4 L_{2}}$

$∴ v = 4 n L_{1}$ and $3 v = 4 n L_{2}$

$o r 2 v = 4 n (L_{2} - L_{1})$

$o r v = 2 n (L_{2} - L_{1})$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Sound WaveSubtopic:Standing wave

⏱ 2mℹ️ Source: PYQ_2020

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