Question

Unpolarized light passes through two polarizers whose transmission axes are at an angle of 25.0 ∘ with respect to each other.

What fraction of the incident intensity is transmitted through the polarizers?

I/I₀ equals:

Answer 1

A polarizer passes 0.5 of the incident unpolarized light, and a second polarizer passes cos(theta)^2 of the polarized

light incident on it (where theta is the angle between the light polarization and the polarizer axis).

equation is

I = 0.5*I₀*cos^2(theta)

I/I₀ = 0.5*(cos25)^2 = 0.5*(0.90630779)^2 = 0.4107