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[" 136.A whistle emitting a sound of fre...

[" 136.A whistle emitting a sound of frequency "440Hz" is tied to "],[" a string of "1.5m" length and rotated with an angular "],[" velocity of "20rad/s" in the horizontal plane.Then,the "],[" range of frequencies heard by an observer stationed at a "],[" large distance from the whistle will be "(v=330m/s)],[" (b) "400Hz" to "480Hz],[" (b) "403.3Hz" to "480Hz],[" (c) "400Hz" to "480Hz],[" (d) "403.3Hz" to "484Hz]

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