Question

The sound heard after reflection is___________.

Answer 1

1. When sound hits a hard surface, it returns to the same medium as light.
2. This phenomenon is called the reflection of sound.
3. Echo is the distinct sound heard after reflection from a distant rigid surface such as a hill or cliff.
4. To hear the echo in the air the distance between the reflecting surface and the air should be at least$17m$.

Hence, the sound heard after reflection is called echo.