waves

Question: A motor car blowing a horn of frequency 124 vib/sec moves with a velocity 72 km/hr towards a tall wall. The frequency of the reflected sound heard by the driver will be (velocity of sound in air is 330 m/s)



1) 109 vib/sec
2) 132 vib/sec
3) 140 vib/sec
4) 248 vib/sec
Solution: Explanation: No Explanation
Doppler Effect

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