Question

Q19. Define the term echo ?

Answer 1

Heyya mate••

HeRe Is Ur AnsWer ..

A sound caused by the reflection of sound waves from the surface back to the listner.

hope it will help u√√√√

Answer 2

Hey !!!

Echo :- The sound heard after reflection from a rigid obstacle is called an achi

➡ 11 m is the minimum distance of hearing echo

it is of three type
a) instantaneous echo
b) syllabic echo
c) successive echo

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Hope it helps you !!!

@Rajukumar111