Plane-polarized light of intensity 80 W/m^2 falls on a polarizing filter whose axis is at 45^circ to the plane of polarization. The transmitted intensity is:

  1. 80 W/m^2
  2. 20 W/m^2
  3. 40 W/m^2
  4. 400 W/m^2
Answer

C) 40 W/m^2

I = I0cos^2theta = 80cos^2 45^circ = 40 W/m^2. SLO P-11-D-06 · Understanding

Physics MCQ · More Polarization MCQs · Practise