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A car with a horn of frequency 620 Hz tr...

A car with a horn of frequency 620 Hz travels towards a large wall with a speed of `20 ms ^(-1) ` velocity of sound is ` 330 ms ^(-1)` The frequency of echo of sound of horn as heard by the driver is

A

700 Hz

B

660 Hz

C

620 Hz

D

550 Hz

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The correct Answer is:
A
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TARGET PUBLICATION-WAVE MOTION -MCQ 7.1
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