Find the fundamental frequency of a closed pipe, if the length of the – McqOptions

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1.	Find the fundamental frequency of a closed pipe, if the length of the air column is 42 m. (speed of sound in air = 332 m/sec) [RPET 2003]
A.	2 Hz
B.	4 Hz
C.	7 Hz
D.	9 Hz
Answer» B. 4 Hz

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