Question

Plz Plz Plz Answer Fast.................... Define an echo

Answer 1

it happens when a sound vibrates in an open place

Answer 2

Hey user here is your answer.......!!☺⤵
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:-) , Echo is a distinct, reflected sound wave from a surface.

A reflected sound can be heard separately from the original sound if the sound source is closer to the receiver while the reflecting hard surface is sufficiently far from receiver. Such reflected sound is called an echo.

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