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A whistle of frequency of 540Hz rotates ...

A whistle of frequency of 540Hz rotates ini a circle of radius 2m at an angular speed of 15rad`//`s. What is the lowest and highest frequency heard by a listener a long distance away at rest w.r.t centre of the circle. Can the apparent frequency be ever equal to the actuall frequency ? Take `v=330m//s`

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SL ARORA-Waves-EXERCISE
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  9. The speed of a transverse wave in a stretched string is 348 ms^(-1), w...

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  15. At 10^5 Nm^(-2) atmospheric pressure the density of air is 1.29 kg m^(...

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  16. At normal temperature and pressur, 4g of He occupies a volume of 22.4 ...

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  17. Find the temperature at which the velocity of sound in air will be 1 1...

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  18. The velocity of sound in air is 332 ms^(-1) at 0^@ C .At what temperat...

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  19. The ratio of the velocity of sound in Hydrogen gas (gamma=7/5) to that...

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  20. An observer sets his watch by the sound of a signal fired from a tower...

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