The driver of a car travelling with speed 30 metres per second towards – McqOptions

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1.	The driver of a car travelling with speed 30 metres per second towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330 metres per second, the frequency of the reflected sound as heard by the driver is [MP PMT 1996]
A.	720 Hz
B.	555.5 Hz
C.	550 Hz
D.	500 Hz
Answer» B. 555.5 Hz

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