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

Q. 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.

  1. 15
  2. 30
  3. 45
  4. 90

Ans: 30 dB

Explanation: Sound level in the source side

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