Question

WHAT IS THE MINIMUM DISTANCE  BETWEEN REFLECTING SURFACE AND SOUND TO HEAR AN ECHO?​

Answer 1

Answer:

17 m

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

Explanation:

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Answer 2

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$\mathtt{\huge{17\:m}}$

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