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Sound — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceSound1 Mark
Question
When we change sound to loud sound we increase its:
✓

Answer

  1. Amplitude
Explanation:
Loudness depends on the square of the amplitude of the wave. 
That is, loudness∝(amplitude)2.
Amplitude is the size of the vibration, and this determines how loud the sound is.  Larger vibrations make larger amplitude, hence, louder the sound.

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