A whistle emitting a sound of frequency 440 Hz is tied to a string of 1.5 m length and rotated with an angular velocity of 20 rad/s in the horizontal plane. Then the range of frequencies heard by an observer at a large distance from the whistle will be (Speed of sound in air vs=330 m/s)

A whistle emitting a sound of frequency 440 Hz is tied to a string of

1.	A whistle emitting a sound of frequency 440 Hz is tied to a string of 1.5 m length and rotated with an angular velocity of 20 rad/s in the horizontal plane. Then the range of frequencies heard by an observer at a large distance from the whistle will be (Speed of sound in air vs=330 m/s)
Answer» A whistle emitting a sound of frequency $440 Hz$ is tied to a string of $1.5 m$ length and rotated with an angular velocity of $20 rad/s$ in the horizontal plane. Then the range of frequencies heard by an observer at a large distance from the whistle will be (Speed of sound in air $v_{s} = 330 m/s$ )