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A police car horn emits a sound at a fre...

A police car horn emits a sound at a frequency 240 Hz, when the car is at rest. If the speed of the sound is 330 m/s the frequency heard by an observer who is approching the car at a speed of 11 m/s is

A

248 Hz

B

244 Hz

C

240 Hz

D

230 Hz

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The correct Answer is:
A
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