Question

A boy blew a whistle while standing in front of a cliff. he heard the echo after 2 sec. find the distance of the cliff from the boy if volocity of sound in air is 344 m/s

Answer 1

Answer:

time taken by the sound to go from the boy to the cliff, t=  

2

4  

s=2s

Speed of sound in air, v=332ms  

−1

 

So, distance of the cliff from the boy, s=v×t=332×2m=664m.

Explanation: