# What is Meant by the 'Loudness' of Sound ? on What Factor Does the Loudness of a Sound Depend ? - Science

Short Note

What is meant by the 'loudness' of sound ? On what factor does the loudness of a sound depend ?

#### Solution

The loudness of the sound is the measure of sound energy reaching the ear per second. It depends on the amplitude of the sound waves. It is measured in decibel (dB).

Concept: SONAR
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#### APPEARS IN

Lakhmir Singh Science Class 9 Physics
Chapter 5 Sound
Short Answers | Q 47.1 | Page 207