waves

Related Questions

• A whistle of frequency 500 Hz tied to the end of a string of length 1.2 m revolves at 400 rev/min. A listener standing some distance away in the plane of rotation of whistle hears frequencies in the range (speed of sound = 340 m/s)

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• The phase difference between two points separated by 0.8 m in a wave of frequency is 120 Hz is $\frac{\pi }{2}.$ The velocity of wave is

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• Velocity of sound is maximum in

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• The fundamental note produced by a closed organ pipe is of frequency $f.$ The fundamental note produced by an open organ pipe of same length will be of frequency

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• In a closed organ pipe the frequency of fundamental note is 50 Hz. The note of which of the following frequencies will not be emitted by it

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