Echo can be heard in every room. [True/ False] - Vidyadip

Question

Echo can be heard in every room. [True/ False]

✓

Answer

False.
Explanation:
They can't hear an echo in small room because in it the sound can't be reflected back. For an echo of a sound to be heard, the minimum distance between the source of sound and the walls of the room should be $17.2m$. Obviously, in a small room echoes cannot be heard.

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