Echo is a reflection of sound waves. If the distance is increased, we hear the sound in more than twice the former time.
What is echo?
The term echo has to do with the reflection of sound waves. We know that when sound waves are reflected, we hear the sound as the echo.
Now, the time that it takes us to hear the echo depends on the distance between the observer and the depth of the well. If the distance is increased, we hear the sound in more than twice the former time.
Learn more about echo: https://brainly.com/question/14861578
