Q.5.(b). What is the sound board? Explain its working with the help of a diagram.

Dear Student ,
In a big hall sound can be absorbed by the walls , floor , ceilings which lead to too much absorption of sound due to which it can not be heard clearly .this can be overcome either by using a curved ceiling or by using a sound board .
A curved sound board is placed behind the speaker in large halls .So that the sound is distributed uniformly through the hall and even persons sitting back at the back of the hall can hear the sound .
Image result for diagram of sound board


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