1.

Two bikes moving in opposite directions approach each other with speed of 40 m/s and 20 m/s respectively. The first bike sounds a horn having a frequency 380 Hz. The frequency heard by the biker of the second bike is[velocity of sound in air is 340 m/s]

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Two bikes moving in opposite directions approach each other with speed of 40 m/s and 20 m/s respectively. The first bike sounds a horn having a frequency 380 Hz. The frequency heard by the biker of the second bike is

[velocity of sound in air is 340 m/s]



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