Sound level is L = 10 log ( II0 ) decibels. A sound 1,000,000,000,000 times as intense as I0 has a level of:

  1. 12 dB
  2. 130 dB
  3. 120 dB
  4. 1200 dB
Answer

C) 120 dB

L = 10 log 10^12 = 10 12 = 120 dB. SLO M-09-A-08 · Application

Mathematics MCQ · More Real Numbers MCQs · Practise