A whistle revolves in a circle with an angular speed of `20 rad//sec` using a string of length `50 cm`. If the frequency of sound from the whistle is `385 Hz`, then what is the minimum frequency heard by an observer which is far away from the centre in the same plane? `v=340m//s`A. 333 HzB. 374 HzC. 385 HzD. 394 Hz

A whistle revolves in a circle with an angular speed of `20 rad//sec`

1.	A whistle revolves in a circle with an angular speed of `20 rad//sec` using a string of length `50 cm`. If the frequency of sound from the whistle is `385 Hz`, then what is the minimum frequency heard by an observer which is far away from the centre in the same plane? `v=340m//s`A. 333 HzB. 374 HzC. 385 HzD. 394 Hz
Answer» Correct Answer - B

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