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A closed organ pipe and an open organ pipe have the same fundamental frequency. If the length of the closed pipe is 20 cm, and the speed of sound in air is 340 m/s, what is the length of the open pipe closest to the first overtone of the closed pipe?
20 cm
40 cm
60 cm
80 cm
Two organ pipes, one open and one closed at one end, resonate at their first overtones with frequencies 600 Hz and 750 Hz respectively. If the speed of sound is 330 m/s, the ratio of the lengths of the pipes is:
4/3
5/3
3/5
5/4
An open organ pipe of length has a fundamental frequency . A hole is drilled at from one end. The fundamental frequency of the pipe now becomes:
2f
The fundamental frequency of a closed organ pipe is 100 Hz. What is the frequency of its third harmonic?
200 Hz
300 Hz
400 Hz
500 Hz
Which of the following is NOT a characteristic of a closed organ pipe?
It produces only odd harmonics
The closed end is a displacement node
The open end is a displacement antinode
It produces all harmonics (both odd and even)
The first overtone of a closed organ pipe is equivalent to which harmonic?
First harmonic
Second harmonic
Third harmonic
Fourth harmonic
The second overtone of an open organ pipe has the same frequency as the first overtone of a closed organ pipe. What is the ratio of their lengths?
1:2
2:1
3:2
4:3
An open organ pipe of length 50 cm resonates at a frequency of 340 Hz. If the speed of sound in air is 340 m/s, which harmonic is this?
First
Second
Third
Fourth
If the fundamental frequency of a closed organ pipe is 100 Hz, what are the frequencies of the next two overtones?
200 Hz, 300 Hz
200 Hz, 400 Hz
300 Hz, 500 Hz
400 Hz, 600 Hz
The fundamental frequency of an open organ pipe is 250 Hz. If one end is closed, what are the frequencies of the first two possible resonant modes?
125 Hz and 250 Hz
125 Hz and 375 Hz
250 Hz and 500 Hz
250 Hz and 750 Hz
