Noise Pollution Questions and Answers

Q: The unit for the measurement of noise pollution is :

Noise is measured in decibels.The decibel (dB) is a logarithmic unit of sound intensity level, so an increase of 10 dB means ten times the intensity. Noise standards and limits are expressed in dB, usually A-weighted, dB(A).Hertz measures frequency (pitch), watt measures power, and lux measures illuminance. None of them expresses loudness of noise.

Q: The unit of measuring the intensity of sound is

The intensity (loudness) of sound is measured in decibels.Sound intensity level is expressed on a logarithmic scale in decibels (dB): an increase of 10 dB means ten times the intensity. Normal conversation is about 60 dB and sounds above about 85 dB can damage hearing over time.The watt is a unit of power, the joule of energy, and the calorie of heat. Intensity in absolute terms is in W/m2, but the unit used for the intensity of sound in everyday measurement is the decibel.

The unit for the measurement of noise pollution is :

A.Decibel
B.Hertz
C.Watt
D.Lux

Exam Year(s)

MPPSC Forest Service - 2022,

Answer: A

Noise is measured in decibels.

The decibel (dB) is a logarithmic unit of sound intensity level, so an increase of 10 dB means ten times the intensity. Noise standards and limits are expressed in dB, usually A-weighted, dB(A).

Hertz measures frequency (pitch), watt measures power, and lux measures illuminance. None of them expresses loudness of noise.

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The unit of measuring the intensity of sound is

A.Watt
B.Joule
C.Calorie
D.Decibels

Exam Year(s)

MPPSC Forest Service - 2022,

Answer: D

The intensity (loudness) of sound is measured in decibels.

Sound intensity level is expressed on a logarithmic scale in decibels (dB): an increase of 10 dB means ten times the intensity. Normal conversation is about 60 dB and sounds above about 85 dB can damage hearing over time.

The watt is a unit of power, the joule of energy, and the calorie of heat. Intensity in absolute terms is in W/m², but the unit used for the intensity of sound in everyday measurement is the decibel.

Discuss in Forum

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