Question

Mera is standing between two hills she shouted loudly and hear first echo after 0.5 sec and second ech after 1 sec what is the distance between the two hills if speed of sound is 334 m/s

Answer 1

334*100/25 distance of first hill
=334*4
=1336m
distance of 2nd hill=334*10/5=334*2=668m
since in case 1 sound travels to the hill in 0.25 sec
and in case 2 0.5 sec
so ans is 1336 m and 668 m respectively

Answer 2

Answer:

Explanation:

speed= distance/time

distance=speed *time

d= 334*0.5=167m  

d= 167/2 ( as the echo returns )

d= 83.5

distance of second hill

334*1=334

d= 334/2= 167

distance between 2 hills is 167+83.5 = 250.5

hence the answer is 250.5 m