The intensity of polarized light decreases to 2/3 of the incident intensity after passing through a polarizing filter.The angle between the electric field and the polarization axis of the filter is

Question

Quizplus · Accepted Answer

The intensity of polarized light after passing through a polarizing filter is given by Malus's law, $I = I_0 \cos^2(\theta)$, where $I_0$ is the initial intensity, $I$ is the final intensity, and $\theta$ is the angle between the electric field and the polarization axis of the filter. Given that $I = \frac{2}{3}I_0$, we have $\frac{2}{3} = \cos^2(\theta)$. Solving for $\theta$ gives $\theta = 35.3^\circ$.

The Intensity of Polarized Light Decreases to 2/3 of the Incident