Question

Define Echo????????

​

Answer 1

Answer:

Echo is the delayed sound vibration produced

the sound which is more than 7hz and the vibration sound keeps vibrating for a while...

Examples are: cinema halls, factories, etc.

Answer 2

$\huge{\boxed{\boxed{\red{\ulcorner{\mid{\overline{\underline{\bf{Answer:-}}}}}\mid}}}}$

${\huge{\mathfrak{\overbrace{\underbrace{\pink{\fbox{\green{\:\:\:Echo\:\:\:}}}}}}}}$

ECHO CAN BE DEFINED AS REFLECTION OF SOUND. IT CAN BE HEARD IN A BIG VACANT ROOM.