If the intensity of a given noise increases two-fold, the noise level in…
2020
If the intensity of a given noise increases two-fold, the noise level in decibels (dB) increases by
- A.
~ 2 dB
- B.
~ 3 dB
- C.
~ 6 dB
- D.
~ 10 dB
Attempted by 35 students.
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Correct answer: B
Decibel level is logarithmic. Doubling intensity increases the level by 10 log10(2), which is approximately 3 dB.