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Q. |
Decibel is a term connected with : |
A. | air |
B. | water |
C. | sound |
D. | soil |
Answer» C. sound | |
Explanation: The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity (usually power or intensity) relative to a specified or implied reference level. A ratio in, decibels is ten times the logarithm to base 10 of the ratio of two power quantities. |
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