An engine running at speed (v)/(10) soun...

An engine running at speed `(v)/(10)` sounds a whistle of frequency 600 Hz. A passenger in a train coming from the oppsite side at speed of `(v)/(15)` experiences this whistle to be of frequency f. If v is speed of sound in air and there is no wind. F is nearest to

711 Hz

630 Hz

580 Hz

510 Hz

Text Solution

Verified by Experts

The correct Answer is:

As the source and the observer are approaching one another, so `n'` would be larger.
`f=(((v+v)/(15))/((v-v)/(10)))600=711Hz`

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