A car is moving towards a high cliffThe car driversounds a horn of frequency fThe reflected sound heardby the driver has frequency 2fIf v be the velocity ofsound - then the velocity of the car - in the same velocityunits - will be [2004]

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A car is moving towards a high cliffThe car driversounds a horn of frequency fThe reflected sound heardby the driver has frequency 2fIf v be the velocity ofsound - then the velocity of the car - in the same velocityunits - will be [2004]