A train is moving on a straight track with speed 20 ms It is

Last updated: 6/21/2023

A train is moving on a straight track with speed 20 ms 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 close to a 6 c 18 b 12 d 24 JEE Main 2015 th 20 m is suspended from a rigid