Question

can you hear a echo of sound in a cinema hall ?give reasons four your answer

Answer 1

no, we can not hear a echo of sound in a cinema hall because in the cinema hall the wall are made up with few sound absorbing materials which absorb the extra sound and only once the sound is heard without echo.

Answer 2

In a cinema hall , there are various sound-absorbing substances like the curtains , which makes it hard for us to hear an echo. Also , due to repeated reflections at the surfaces , the sound gets prolonged, and the echo cannot be 
distinguished from the original sound.