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| Q. |
Loudness of sound varies directly with vibrating body’s – |
| A. | Intensity |
| B. | Amplitude |
| C. | Pitch |
| D. | Quality |
| Answer» B. Amplitude | |
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Explanation: Loudness of Sound: Loudness of sound depends on amplitude of vibration. Loudness of sound is directly proportional to square of amplitude of vibration. |
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