Two Organ Pipes, a Pipe of Fundamental Frequency 440 Hz

question 60

Multiple Choice

Two organ pipes, a pipe of fundamental frequency 440 Hz, closed at one end, and a pipe of fundamental frequency 660 Hz, open at both ends, produce overtones. Which choice below correctly describes overtones present in both pipes?

• A) After the first overtone of each pipe, every second overtone of the first pipe matches every second overtone of the second pipe.
• B) After the first overtone of each pipe, every second overtone of the first pipe matches every third overtone of the second pipe.
• C) After the first overtone of each pipe, every third overtone of the first pipe matches every second overtone of the second pipe.
• D) After the first overtone of each pipe, every second overtone of the first pipe matches every fourth overtone of the second pipe.
• E) After the first overtone of each pipe, every third overtone of the first pipe matches every fourth overtone of the second pipe.

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