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Question
Distinguish between loudness and intensity of sound.
Solution
| Loudness | Intensity of sound | |
| 1. | Loudness measures the ear's sensitivity to sound and can distinguish between loud and soft sounds. | The sound energy passing through a unit area in one second is called sound intensity. |
| 2. | The loudness may vary for different observers. That is, it depends on the sensitivity of the ears. | It does not depend on the sensitivity of the ears. |
| 3. | Its unit is decibel (dB). | Their unit is watt/meter or W/m2. |
| 4. | It has a subjective existence. | It has an objective existence. |
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