Question

Identify the unit to measure sound from the following:

• A. Particles per hundred
• B. Decibel
• C. Particles per thousand
• D. Nanometer

Hint:

When dealing with sound-related measurements, remember that decibels are used for sound intensity or loudness. The unit is based on a logarithmic scale to handle the wide range of sound intensities humans can perceive.

Answer 1

The Correct Option is B

Sound intensity is measured in decibels (dB). This logarithmic unit expresses a ratio of power or intensity relative to a reference level, commonly used in acoustics and audio technology.
- Option (A) "Particles per hundred" is incorrect; sound is not measured by particle count.
- Option (C) "Particles per thousand" is similarly incorrect for sound measurement. 
- Option (D) "Nanometer" is incorrect as it measures length, not sound.
Therefore, the correct answer is (B) Decibel.