Plane-polarized light of intensity 40 W/m^2 falls on a polarizing filter whose axis is at 30^circ to the plane of polarization. The transmitted intensity is:

  1. 30 W/m^2
  2. 15 W/m^2
  3. 60 W/m^2
  4. 300 W/m^2
Answer

A) 30 W/m^2

I = I0cos^2theta = 40cos^2 30^circ = 30 W/m^2. SLO P-11-D-06 · Understanding

Physics MCQ · More Polarization MCQs · Practise