Question

The physical quantity upon which the loudness of the sound depends :

• A. pitch
• B. intensity
• C. amplitude
• D. frequency

Answer 1

The correct option is C

amplitude

The explanation for the correct option

Option C: amplitude

1. The loudness of a sound wave depends on its amplitude.
2. Amplitude is the magnitude of maximum displacement of a vibrating particle about its mean position.
3. The higher the amplitude, the higher will be the loudness.

The explanation of incorrect options :

Option A: pitch

The Pitch of the sound is determined by the frequency and wavelength of the sound wave.

Option B: Intensity

The amount of sound energy passing through an area each second is called the intensity of sound.

Option D: Frequency

It is the number of compressions or the number of rarefactions occurring per second.

Hence, the correct option is ( C ), amplitude.