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Q.

The loudness of sound is measured in units of _______________.

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a

meter/second (m/s) 

b

decibels (dB)

c

meter (m)

d

hertz (Hz)

answer is C.

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Detailed Solution

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The loudness of sound is proportional to the amplitude of the wave. The distance between the starting point and the maximum displacement of the wave is called amplitude.  

The unit of the loudness of sound is the decibel (dB). Thus, the loudness of sound is measured in units of decibels (dB).
 

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