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| Q. |
Decibel is the unit of . |
| A. | Speed of light |
| B. | Intensity of sound |
| C. | Intensity of heat |
| D. | None of these |
| Answer» B. Intensity of sound | |
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Explanation: Decibel (dB) unit is used for expressing the ratio between two amounts of electric or acoustic power for measuring the relative loudness of sounds. |
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