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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveWavesMedium2 minQB

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A pipe of length 20 cm is open at both ends. Which harmonic mode of the pipe is resonantly excited by a 1700 Hz source? The speed of sound = 340 m s⁻¹:

Options:

Answer:

Solution:

For an open pipe $f_{n} = n v /2 L = n \times 340/0.4 = 850 n$ Hz. $1700 = 2 \times 850$ , so $n = 2$ : the second harmonic.

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Waves

⏱ 2mℹ️ Source: QB

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