Q.State Malus's law in words and in mathematical form. At what angle between the transmission axes of the polarizer and the analyzer is the transmitted intensity

Malus's law states that when plane polarized light of intensity $I_0$ is incident on an analyzer whose transmission axis makes an angle $\theta$ with the plane of polarization of the incident light (i.e. with the polarizer's own transmission axis), the intensity of the light transmitted by the analyzer is

(a) The transmitted intensity is maximum, $I=I_0$, when $\cos^2\theta=1$, i.e. when $\theta=0^\circ$ -- the transmission axes of the polarizer and analyzer are parallel. …

Recall the formula $I=I_0\cos^2\theta$ and evaluate it at the t …

• Writing Malus's law as $I=I_0\cos\theta$ (missing the square) instead of $I=I_0\cos^2\theta$. …