Question

A train is moving on a straight track with speed 20 ms ^−1. it is blowing its whistle at the frequency of 1000 Hz. The percentage change in the frequency heard by a person standing near the track as the train passes him is (speed of sound = 320 ms^−1 ) close to:_______ A) 12% B) 18% C) 24% D) 60%

Answer 1

Answer:

let me know if you need anything else from me..