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Q.

Is it true that the ceilings of the concert halls are curved?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
The phenomenon of sound waves reflecting off of a surface is known as sound reflection. While the sound wave will converge at a point and be easily amplified if it is reflected from a concave surface, the sound wave will be dispersed out after being reflected from a convex surface. The curved surfaces of music hall ceilings ensure that sound reflects from them and disperses evenly across the whole space.
 
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