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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 16 - Waves and Acoustics > An engine running at speed v/10 sounds a whistle of frequency 600 Hz. A passenger in a train coming from the opposite 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

An engine running at speed v/10 sounds a whistle of frequency 600 Hz. A passenger in a train coming from the opposite 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

The graph shows a wave at t=0 travelling to the right with a velocity of 4m/s. The equation that best represents the wave is