Question

To hear an echo, the total distance covered by sound from the point of generation to the

reflecting surface and back should be atleast __________.​

Answer 1

Answer:

its easy

Explanation:

Hence, the total distance covered by the sound from the point of generation to the reflecting surface and back should be at least (344 m/s) × 0.1 s = 34.4 m. Thus, for hearing distinct echoes, the minimum distance of the obstacle from the source of sound must be half of this distance, that is, 17.2 m.

To hear an echo, the total distance covered by sound from the point of generation to the

reflecting surface and back should be atleast 34.4 m

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Answer 2

Explanation:

distance should be kept at a distance of 17.2m or greater