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Q.

[47]

Is it true that the loudness of the sound refers to how large the amplitude of the sound wave is?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
The loudness of the sound refers to how large the amplitude of the sound wave is. Amplitude refers to the greatest displacement or distance that a point on a vibrating body or wave can move relative to its equilibrium location. It is equivalent to the vibration path's half-length.
That is Loudness  (Amplitude)2.
There is a relationship between the amplitude and the loudness of the sound. The decibel (dB) scale for measuring loudness varies directly with the square of the amplitude of the vibration. Thus, noise is referred to as sounds above 80 dB.
  
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