A pipes lower end is immersed in water such that the length of air column from the top open end has a certain length 25cm.The speed of sound in air is 350m/s.The air column is found to resonate with a tuning fork of frequency 1750Hz.By what minimum distance should the pipe be raised in order to make the air column resonate again with the same tuning fork?
Asked by m.nilu
25th November 2018,
8:10 PM
Answered by Expert
Answer:
Wavelength = velocity/frequency = 350/1750 = 0.2m = 20cm
Now for resonate frequency in open pipe let's take two consecutive length l1 and l2
So L2-L1= wavelength/2
L-25 =20/2
L-25=10
L=35 cm
Answered by Expert
26th November 2018,
10:24 AM
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