Which of the following characteristics of sound waves determines how loud a sound is perceived?

JAMB Physics 2023 297 views
Source: JAMB · 2023

Which of the following characteristics of sound waves determines how loud a sound is perceived?

  1. Wavelength
  2. Frequency
  3. Velocity
  4. Amplitude ✓
Explanation

Loudness depends on the amplitude, the size of the vibration, which relates to the energy of the wave. A bigger amplitude gives a louder sound.

Frequency decides pitch, not loudness.

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