Home/ Questions/Q 410741
Next
In Process
Aslam Kumar Sharaf
Asked: 2022-11-06T08:09:48+05:30 In:

Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A, blows a horn of frequency 450 Hz. Then the apparent frequency heard by B is (The velocity of sound is 330 m/s) :-
A. 425 Hz
B. 300 Hz
C. 450 Hz
D. 350 Hz

Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A, blows a horn of frequency 450 Hz. Then the apparent frequency heard by B is (The velocity of sound is 330 m/s) :-
A. 425 Hz
B. 300 Hz
C. 450 Hz
D. 350 Hz
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – A
    `f_(B)=f_(a)((v+v_(B))/(v+v_(A)))=450((330+10)/(330+30))=425 Hz`

    • 0