Q. 165.0( 1 Vote )

A train, standing

Answer :

There no relative motion between the train and the observer, so the frequency heard by the observer is same as the frequency produced by the train.

The wind is blowing at a speed of 10m\sec in the direction in which sound wave is travelling. So, net speed of sound wave is = (350+10) m\sec = 350 m\sec.

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