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Question

is the unit that expresses the loudness of a sound.

A
Hertz (Hz)
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B
Decibel (dB)
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C
Kilogram (kg)
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Solution

The correct option is B Decibel (dB)
Decibel is the unit that expresses how loud or soft a sound is. The higher the value, the louder the sound is. Decibel is denoted by the symbol dB.

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