A racing car moving towards a cliff, sounds its horn. The driver observes that the sound reflected from the cliff has a pitch on

A racing car moving towards a cliff, sounds its horn. The driver observes that the sound reflected from the cliff has a pitch one octave higher than the actual sound of the horn. If `v` is the velocity of sound, then the velocity of the car is
A. `V//sqrt(2)`
B. `V//2`
C. `V//3`
D. `V//4`

A racing car moving towards a cliff, sounds its horn. The driver observes that the sound reflected from the cliff has a pitch one octave higher than t

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