A train is moving towards a stationary observer with a speed of 30m/s.The frequency of its whistle appears to be 600Hz to the observer. if the train were moving away from the observed with the same speed, then what frequency of the wgistle would have been listened?

A train is moving towards a stationary observer with a speed of 30m/s.

1.	A train is moving towards a stationary observer with a speed of 30m/s.The frequency of its whistle appears to be 600Hz to the observer. if the train were moving away from the observed with the same speed, then what frequency of the wgistle would have been listened?
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A train is moving towards a stationary observer with a speed of 30m/s.The frequency of its whistle appears to be 600Hz to the observer. if the train were moving away from the observed with the same speed, then what frequency of the wgistle would have been listened?

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