MCQOPTIONS
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| 1. |
A room is separated by a partition wall. The average intensities of sound in the source and receiving sides across the partition are 10 4 W/m2 and 10 7 W/m2 respectively. The transmission loss (TL) of the partition wall is _______ dB. |
| A. | 15 |
| B. | 30 |
| C. | 45 |
| D. | 90 |
| Answer» C. 45 | |