Multiple choice

From the following which is the unit of sound?

  1. Decibel

  2. 1cy (light year)

  3. 1 parsec

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The decibel (dB) is the standard unit used to measure the intensity of sound. It's a logarithmic unit that expresses the ratio of a physical quantity (usually power or intensity) to a reference level.

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