A person feels 2.5% difference of frequency of a motor-car horn. If the motor-car is moving to the person and the velocity of sound is 320 m/sec, then the velocity of car will be [CPMT 1981; MP PET 1989]

The wave C is ahead by a phase angle of pand the wave B lags behind by a phase angle of p

A person feels 2.5% difference of frequency of a motor-car horn. If th

1.	A person feels 2.5% difference of frequency of a motor-car horn. If the motor-car is moving to the person and the velocity of sound is 320 m/sec, then the velocity of car will be [CPMT 1981; MP PET 1989]
A.	8 m/s (approx.)
B.	800 m/s
C.	The wave C is ahead by a phase angle of pand the wave B lags behind by a phase angle of p
D.	6 m/s (approx.)
Answer» B. 800 m/s

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A person feels 2.5% difference of frequency of a motor-car horn. If the motor-car is moving to the person and the velocity of sound is 320 m/sec, then the velocity of car will be [CPMT 1981; MP PET 1989]

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