What is the base frequency if a pipe gives notes of frequencies 425, 2 – McqOptions

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1.	What is the base frequency if a pipe gives notes of frequencies 425, 255 and 595 and decide whether it is closed at one end or open at both ends [UPSEAT 2001]
A.	17, closed
B.	85, closed
C.	17, open
D.	85, open
Answer» C. 17, open

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