Sound WavesEasy
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 :-
Options
A.18%
B.24%
C.6%
D.12%
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