Multiple choice

Decibel is a term connected with which of the following physical factors?

  1. Air volume

  2. Water

  3. Sound

  4. Soil

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Intensity of sound is measured in decibles. The decibel measures sound pressure or electrical pressure (voltage) levels. It is a logarithmic unit that describes the ratio of two intensities, such as two different sound pressures, two different voltages and so on.

Keep practicing — related questions