Question

a person hears his echo of his own sound from a distant hill after 2 seconds how far away is the person from hill if the speed of sound is 330ms​

Answer 1

Given:-

• Time taken to heard an echo ,t = 2s

• Speed of sound in air ,s = 330m/s

To Find:-

• Distance between person & hill.

Solution:-

As we know that the sound that is heard after the first sound due to reflection of sound at a surface is called echo.

• Distance = speed×time/2

Substitute the value we get

→ d = S×t/2

→ d = 330×2/2

→ d = 660/2

→ d = 330m

∴ The distance between the person and the hill is 330 metre.