A linearly polarized electromagnetic wave has an average intensity of 245 W/m2.

Question

A linearly polarized electromagnetic wave has an average intensity of 245 W/m2. This wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). Polarizer A is oriented with its transmission axis at an angle of theta1 = 32.5 degree with the incident electric field. Polarizer B has its axis at an angle of theta2 = 77.5 degree with the incident electric field, as in the figure below. Suppose that the two polarizers A and B are interchanged. What would the average intensity be after passing through both polarizers?

Explanation / Answer

3) Here we have IB = I0*cos^2(77.5)*cos^2(32.5) = 245*cos^2(77.5)*cos^2(32.5) = 8.16 W/m^2

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.