Answer to Question #86962 in Optics for Britt

Question

What would happen to the intensity of light as the angle between the polarizer and the analyzer increases?

Answer 1

Intensity after the analyzer is given by the Malus's law:

$$I=I_0cos^2\theta$$

where θ - angle between analyzer and polarizer.

We see, that intensity is maximal at θ=0, and it decreases when the angle increases.