Distinguish between loudness and intensity of sound.

Answer 

Loudness

Intensity

Loudness is defined as a measure of the response of the ear to the sound.

Intensity is defined as Sound power per unit area.

Loudness is measured in decibels (db)

Intensity is measured in Watt per meter square (W/m^2)

It is a subjective quantity. Sound can be loud for one person, but not loud for someone else

It is an objective quantity. It doesn’t vary person to person

It depends on sensitivity of our ears

It doesn’t depend on sensitivity of our ear

  1. Class 9
  2. Chapter 12 Class 9 - Sound

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.