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A car is moving towards a high cliff. Th...

A car is moving towards a high cliff. The car driver sounds a horn of frequency f. The realected sound heard by the driver has a frequency 2f. If v be the velocity of sound , then the velocity of the car, in the same velocity units will be

A

`(v)/(sqrt(2))`

B

`(v)/(3)`

C

`(v)/(4)`

D

`(v)/(2)`

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The correct Answer is:
B
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