Question

What is an echo? How it is produced?​

Answer 1

Answer:

The repetition of sound caused by the reflection of sound is called echo. An echo is produced when sound is reflected from a hard surface such as a tall brick wall or a cliff.

Answer 2

Explanation:

=>The repetition of sound caused by the reflection of sound is called echo.

• An echo is produced when sound is reflected from a hard surface such as a tall brick wall or a cliff.