Question

9. A pipe, 30.0 cm long, is open at both ends. Which harmonic mode of the pipe resonates a 1.1 KHZ sources ?​

Answer 1

Answer:

Given : ν

n

=1.1 kHz =1100 Hz v=330 m/s

Length of pipe L=30 cm 0.3 m

Frequency of nth harmonic in an open pipe ν

n

=

2L

nv

∴ 1100=

2×0.3

n×330

⟹n=2 i.e. second harmonic

Answer 2

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