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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveStanding waveMedium2 minPYQ_2014

PhysicsMediumsingle choice

$A$ whistle whose air column is open at both ends has a fundamental frequency of $5100 Hz$ . If the speed of sound in air is $340 ms^{- 1}$ , the length of the whistle, in $cm$ , is

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Solution:

For an open pipe, the frequency $f = \frac{v}{2 l} \Rightarrow 5100 = \frac{340}{2 \times 1} l = \frac{340}{5100 \times 2} \Rightarrow l = \frac{2}{30 \times 2} = \frac{1}{30} m l = \frac{100}{30} = \frac{10}{3} cm$

Stream:WBJEESubject:PhysicsTopic:Sound WaveSubtopic:Standing wave

⏱ 2mℹ️ Source: PYQ_2014

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