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Questions  

A closed pipe and an open pipe have their first overtones identical in frequency. Their lengths are in the ratio

a
1 : 2
b
3 : 4
c
4 : 5
d
5 : 6

detailed solution

Correct option is B

For closed pipe, first overtone f2=3v4L1For Open pipe, first overtone f2=vL2 ∴L1L2=34=3:4

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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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