22. what is echo? why sound is
called mechanical wave. (2)
Answers
Answered by
0
Answer:
Echo is the reflection of sound that arrives with the listener with a delay after the direct sound. Sound is a mechanical wave because it can't travel through a vaccum
Answered by
0
22. The sound that we hear after reflection is known as echo.Electromagnetic waves do not require a medium in order to transport their energy that is why sound is called mechanical wave.
Similar questions