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A train is moving in an elliptical orbit...


A train is moving in an elliptical orbit in anticlockwise sense with a speed of `110(m)/(s)`. Guard is also moving in the given direction with same speed as that of train. The ratio of the length of major and minor axes is `(4)/(3)`. Driver blows a whistle of 1900 Hz at P, which is received by guard at S. The frequency received by guard is (velocity of sound `v=330(m)/(s)`)

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