then the frequency of horn heard by the driver of first car when the line joining the cars makes angle of 45^∘C with the roads

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Two cars are moving on two perpendicular roads towards a crossing with uniform speeds of 72kmh and 36kmh. If second car blows horn of frequency 280 Hz, then the frequency of horn heard by the driver of first car when the line joining the cars makes angle of 45^∘C with the roads, will be (velocity of sound is 330 m/s)
31
Oct
Two cars are moving on two perpendicular roads towards a crossing with uniform speeds of 72kmh and 36kmh. If second car blows horn of frequency 280 Hz, then the frequency of horn heard by the driver of first car when the line joining the cars makes angle of 45^∘C with the roads, will be (velocity [...]
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