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

The unit used to measure the intensity of sound is the decibel (dB). It is a logarithmic unit used to express the ratio of a physical quantity, such as power or intensity, relative to a specified or implied reference level. The decibel is commonly used in acoustics and audio technology.
- Option (A) "Particles per hundred" is incorrect as sound is not measured in terms of particles. 
- Option (C) "Particles per thousand" is also incorrect for sound measurement. 
- Option (D) "Nanometer" is incorrect as nanometers are used to measure length, not sound.
Thus, the correct answer is (B) Decibel.