A) 42.5 Hz
B) 85 Hz
C) 170 Hz
D) 425 Hz
Correct Answer: B
Solution :
Observed frequency are 425, 595 and 765 Hz Ratio =425: 595: 768 \[=5\times 87:7\times 85:9\times 85\] \[=5:7:9\] Only odd multiples are obtained. So, the pipe is closed organ pipe and its fundamental frequency is 85 Hz.You need to login to perform this action.
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