What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.

Calculate the minimum distance in air required between the source of sound and the obstacle to hear an echo. Take speed of sound in air = 350 m s^(-1)

Statement given below is incorrect. Write the correct statement. In order to produce an echo, the minimum distance between the source of sound and the reflecting body should be 14 m.

Why will an echo not be heard when the distance between the source of sound and the reflecting surface is 10 m ?

What should be the minimum distance between the source and reflector in water so that the echo is heard distinctly ? (The speed of sound in water = 1400 m s^(-1) ).

To hear an echo, the minimum distance between source and reflector in air is:

A source of sound emitting waves at 360 H_(Z) is placed in front of a vertical wall, at a distance 2 m from it. A detector is also placed in front of the wall at the same distance from it. Find the minimum distance between the source and the detestor for which the detector detects a maximum of sound. Take speed of sound in air = 360 m//s . Assume that there is not phase change in reflected wave.

A soure of sound of frequency 165 hz is placed in front of a wall at a distance 2 m from it. A dtector is also placed in front of the wall at the same distance from it. Find the minimum distance between the source and detector for which maximum sound is recorded int he detector . the speed of sound is 330 m/s

the minimum distance between the reflecting surface and source for listening the eco of sound is ( take speed of sound 340 m/s )

A man standing 25 m away from a wall produces a sound and receives the reflected sound. Will the man be able to hear a distinct echo ? Give a reason for your answer.

A source emitting sound of frequency 180 Hz is placed in front of a wall at a distance of 2 m from it. A detector is also placed in front of the wall at the same distance from it. Find the minimum distance between the source and the detector for which the detector detects a maximum of sound. Speed of sound in air =360ms^-1 .