Standing Waves in Closed Organ Pipe
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You have a test tube of length 14 cm. You blow in it and form standing waves. Can you tell the fundamental frequency of standing wave formed in the tube if it was half filled with ice. (i) for diagram 1 (ii) for diagram 2
Given v = 336 ms
(i) - 600 Hz (ii) - 800 Hz
(i) - 800 Hz (ii) - 1200 Hz
(i) - 600 Hz (ii) - 600 Hz
(i) - 1200 Hz (ii) 600 Hz
You have 2 pipes of length 1.20 m. One pipe is open, other has one end closed. First overtone is formed in both the pipes. Find the position of 1st displacement node from origin
0.4 m, 0.3 m
0.3 m, 0.4 m
0.6 m, 0.8 m
0.6 m, 0.6 m
Find the fundamental, first overtone and second overtone frequencies of an open organ pipe of length 20 cm. Speed of sound in air is 340ms−1.
120, 240 360 Hz
None of these
150, 300 450 Hz
850 Hz, 1750 Hz, 2550 Hz
- 50 Hz
- 60 Hz
- 40 Hz
- 70 Hz
A closed pipe has length 0.6m. The air inside the pipe is maintained at temperature 27∘ C. Calculate the fundamental frequency and the frequency of the next two overtones.
(given velocity of sound in air at 0∘C=330 ms−1)
144 Hz, 288 Hz, 432 Hz
144 Hz, 432 Hz, 720 Hz
144 Hz, 216 Hz, 288 Hz
None of these
- 12
- 18
- 24
- 30
- 4L
- L
- 2L
- L2
- a2
- a
- √3a2
- None
- 85 Hz, 170 Hz
- 170 Hz, 255 Hz
- 85 Hz, 255 Hz
- 55 Hz, 255 Hz