In which units is the loudness of sound measured?

Options

A. hurtz
B. decible
C. kg
D. m/s

Answer

To answer the question "In which units is the loudness of sound measured?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Loudness**: Loudness is a subjective perception of sound intensity. It is how we perceive the strength or amplitude of sound waves.

2. **Sound Intensity**: Loudness is often associated with sound intensity, which is the power per unit area carried by sound waves.

3. **Units of Measurement**: The intensity of sound is measured in terms of sound power or sound pressure.

4. **Decibel Scale**: The standard unit used to measure the intensity of sound is the decibel (dB). This scale is logarithmic, meaning that an increase of 10 dB represents a tenfold increase in intensity.

5. **Conclusion**: Therefore, the loudness of sound is measured in decibels (dB).

### Final Answer:
The loudness of sound is measured in units called decibels (dB).

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