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Questions  

A pipe open at both ends has fundamental frequency f1. When34th  of its length is in water, it produces fundamental note of f2. Then f2f1 is

a
12
b
2
c
34
d
4 3

detailed solution

Correct option is A

for open pipe f1=v2i when 34 is immersed it becomes a closed pipe of length l4 f2= v4l4=vl

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An organ pipe P1 closed at one end vibrating in its first harmonic and another pipe P2 open at both  ends vibrating in its third harmonic are in resonance with a given tuning fork. The ratio of the length of P1 to that of P2 is:


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