Question

why we can't hear the eco in small room​

Answer 1

Explanation:

Thus, the minimum distance between the point of generation and reflecting surface should be half of it i.e. 17. ... So, we cannot hear an echo in a small room as the minimum distance for the echo will not be satisfied. But we can hear an echo in a long gallery and big halls.

Answer 2

Answer:

Thus, the minimum distance between the point of generation and reflecting surface should be half of it i.e. 17. ... So, we cannot hear an echo in a small room as the minimum distance for the echo will not be satisfied. But we can hear an echo in a long gallery and big halls.

Explanation:

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