Light passes through two polarizers. The intensity of the light emerging from th

Question

Light passes through two polarizers. The intensity of the light emerging from the second polarizer is 15.0% of the intensity of the light that is incident on the first polarizer. In both cases below, the angle you state should be a positive value between 0 degrees and 90 degrees. (a) If the incident light is unpolarized, what is the angle between the transmission axes of the two polarizers? degree (b) Now, you replace the unpolarized incident light by polarized incident light of the same intensity. Once again, the intensity of the light emerging from the second polarizer happens to be exactly the same as that obtained with the unpolarized light. What is the angle between the polarization direction of the incident light and the transmission axis of the first polarizer? degree

Explanation / Answer

a) It will be based Mallu's theorem I=Iocos20 since Io/I=0.15 so theta will be 67 degree

b) Since ampltitude is same, intensity is same after second polariser. Transmission axis angle will be same.

In first polarizer angle must be zero.

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

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