Question

what is echo? how is echo formed​

Answer 1

Answer:

Echo is the phenomenon of reflection of sound after striking on some hard surface like wall.

Explanation:

It forms when the distance between sound producing source and obstruction should at least 17. 2 metre...

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Answer 2

Answer:

An echo is a sound that is repeated because the sound waves are reflected back. Sound waves can bounce off smooth, hard objects in the same way as a rubber ball bounces off the ground. Although the direction of the sound changes, the echo sounds the same as the original sound.