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  • The engine of a train moving with speed  towards a platform sounds a whistle at frequency <

The engine of a train moving with speed 10 ms^{ -1} towards a platform sounds a whistle at frequency 400 Hz. The
frequency heard by a passenger inside the train is : (neglect air speed. Speed of sound in air = 330 ms^{-1})

Option: 1

400 Hz


Option: 2

388 Hz


Option: 3

200 Hz


Option: 4

412 Hz


Answers (1)

best_answer

The passenger inside the train is at rest wrt train so frequency heard by passenger inside the train is same as the
source frequency i . e . , 400 Hz

Posted by

Irshad Anwar

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