Question

An echo is returned in 6 sec. What is the distance of reflecting surface from source? (Speed of sound 342 m/s)

Answer 1

Speed of sound,u = 342 m/s

Time taken for hearing the echo,t = 6 s

Distance travelled by the sound,u t = 342*6 = 2052

speed= distance/time

so,distance of the reflecting surface from the source = 2052/2 = 1026 m

Thanks....!!

Answer 2

Distance echo traveled = d
Time taken = 6 seconds = t
Speed =d/t
Speed=342m/s
Distance =s*t
=342*6
=2052 metres
Echo distance =2052/2
=1026metres