Question

In an auditorium, when a speech is going on, a window is opened beside the audience, then the absorption of sound :

• A. increases
• B. decreases
• C. remains Same
• D. becomes zero

Answer 1

The correct option is A increases

Windows are opened in an auditorium during a speech so that more absorption of the sound takes place by outer atmosphere and no sound gets reflected back which interferes with the original sound resulting in noise (echo).So echoes are reduced.