How is Loudness related to amplitude of sound and in what units it is measured? [3 MARKS]

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Solution

Each point: 1 Mark

1. Loudness of sound is proportional to the square of the amplitude of the vibration producing the sound.
2. For example, if the amplitude becomes twice, the loudness increases by a factor of 4.
3. The loudness is expressed in a unit called decibel (dB).

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How is Loudness related to amplitude of sound and in what units it is measured? [3 MARKS]

Each point: 1 Mark 1. Loudness of sound is proportional to the square of the amplitude of the vibration producing the sound. 2. For example, if the amplitude becomes twice, the loudness increases by a factor of 4. 3. The loudness is expressed in a unit called decibel (dB).

Each point: 1 Mark

1. Loudness of sound is proportional to the square of the amplitude of the vibration producing the sound.
2. For example, if the amplitude becomes twice, the loudness increases by a factor of 4.
3. The loudness is expressed in a unit called decibel (dB).