BITSAT 2021 Paper

Section: Physics

Question : 21 of 150

Marks: +1, -0

The frequency of whistle of an engine appears to be (4∕5)th of initial frequency when it crosses a stationary observer. If the velocity of sound is 330m∕s , then the speed of engine will be

30m∕s
36.6m∕s
40m∕s
330m∕s

Validate

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