Problem 2 An unpolarized electromagnetic wave is sent through two sheets The fir

Question

Problem 2 An unpolarized electromagnetic wave is sent through two sheets The first sheet, A, is oriented so that its transmission axis makes an angle of 30° with respect to the vertical. The second sheet, B, is oriented so that its transmission axis makes an angle of 90° with the vertical. The incident beam has an electric field of peak magnitude of 250 N/C and average intensity So of 83 W/m2 of polarizing material. a) What is the average intensity of the beam after it passes through sheet A. 30° 3 90° b) What is the peak value of electric field after it goes through sheet A

Explanation / Answer

The first sheet of polarizing material will polarize the light along the transmission axis of the first polarizer that is along 30 degrees to the vertical, without any change in its intensity or its peak value of the electric field. So, average intensity of the beam after it passes through sheet A = 83 W/m^2

peak value of electric field after it goes through sheet A = 250 N/C

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

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