Find the distance between a surface and the source of sound, if speed of sound is 334 m/s and echo returns from the surface in 1.5 s.

Question

Philoid · Accepted Answer

Given

Speed of sound (u) = 334 m/s

Time taken for hearing the echo (t) = 1.5s

Now

⇒

⇒ Distance travelled by the sound = 334 ×1.5 = 501 m.

In 1.5 s, sound has to travel twice the distance between the source and surface. Therefore, the distance between the source and surface is = = 250.5 m

Distance of source from surface = 250.5 m