a man is standing at 51m from a wall fires a gun calculate the time after which an echo is - Science - Sound

Question

a man is standing at 51m from a wall fires a gun calculate the time
after which an echo is heard the speed of sound is 340m per seconds

Somnath physics · Accepted Answer

Here,D=51mv=340ms-1let t be the echo timeThe sound generated by the gun's fire will travel to thewall and return back
We know that v=2Dt=>t=2Dv=2×51340=0 3s

a man is standing at 51m from a wall fires a gun.calculate the time after which an echo is heard.the speed of sound is 340m per seconds