Question

Velocity of sound in the atmosphere of planet is 500 m s. The minimum distance between the sources of sound and the
obstacle to hear the echo, should be​

Answer 1

Answer:

The minimum distance between the source of a sound and reflecting body should be 17 m for the formation of an echo.

Explanation:

Answer 2

25m

Explanation:

v=2d/t

velocity =500m/s

persistence of human ear,t=0.1 second

500=2d/0.1

d=500×0.1/2

d=25