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| Q. |
The unit of measurement of noise is – |
| A. | Decibel |
| B. | Hertz |
| C. | Amplifier |
| D. | Acoustics |
| Answer» A. Decibel | |
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Explanation: The decibel (dB) is the unit used to measure the intensity of sound or noise level. It is given in terms of a logarithmic function of a ratio of power intensities. One decibel is one tenth of one bel, named in honor of Alexander Graham Bell who was the inventor of the telephone and phonograph. |
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