Question

What is an echo? What factor are important to get a distinct echo?

Answer 1

an echo is the reflection or the bouncing back of sound which comes back to listener is called echo.To have distinct echo the reflector should be big enough and there should be a distance of 17 m .

Answer 2

the sound we hear when air reflects back after hitting a surface is called an echo.
for a distinct echo an object should be in a great speed

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