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Q: The unit of measurement of noise is
  • A. Decibel
  • B. Hertz
  • C. Amplifier
  • D. Acoustics
Correct Answer: Option A - The normal measuring unit of sound is called a decibel. Another measurement unit of sound pressure is called "Weighted sound pressure" The central pollution control board has set a maximum of 55 decibels in residential areas, 65 decibels in commercial areas and a maximum of 75 decibels in industrial areas.
A. The normal measuring unit of sound is called a decibel. Another measurement unit of sound pressure is called "Weighted sound pressure" The central pollution control board has set a maximum of 55 decibels in residential areas, 65 decibels in commercial areas and a maximum of 75 decibels in industrial areas.

Explanations:

The normal measuring unit of sound is called a decibel. Another measurement unit of sound pressure is called "Weighted sound pressure" The central pollution control board has set a maximum of 55 decibels in residential areas, 65 decibels in commercial areas and a maximum of 75 decibels in industrial areas.