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 racing car moving towards a cliff, sounds its horn. The driver obser

1.	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
Answer» `(v)/(2)` `(v)/(sqrt(2))` `(v)/(4 )` `(v)/(3)` Solution :In CASE of reflection from a stationary cliff, `f.=((v+v_0)/(v-v_0))f = 2F "" thereforev_0 = (v)/(3)`

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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

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