A progressive wave has intensity 4 W/m^2. If its amplitude is multiplied by 2, its new intensity is:

  1. 32 W/m^2
  2. 8 W/m^2
  3. 16 W/m^2
  4. 160 W/m^2
Answer

C) 16 W/m^2

I propto A^2, so I = 4 (2)^2 = 16 W/m^2. SLO P-11-D-01 · Application

Physics MCQ · More Wave Intensity and the Doppler Effect MCQs · Practise