A sound of 80 dB is how many times as intense as a sound of 50 dB? (L = 10log II0 )

  1. 3 times
  2. 1000 times
  3. 30 times
  4. 1.6 times
Answer

B) 1000 times

The difference is 30 dB = 10 log I1I2, so log I1I2 = 3 and I1I2 = 10^3 = 1000. SLO M-09-A-08 · Application

Mathematics MCQ · More Real Numbers MCQs · Practise