A racing car moving towards a cliff sound its horn. The driver observ – McqOptions

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1.	A racing car moving towards a cliff sound 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, the velocity of the car is?
A.	v/√2
B.	v/2
C.	v/3
D.	v/4
Answer» D. v/4

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