Unpolarized light is incident upon two polarization filters that do not have their transmission axes aligned.If 14% of the light passes through,what is the measure of the angle between the transmission axes of the filters?
A)58°
B)75°
C)86°
D)82°

Question

Quizplus · Accepted Answer

The intensity of light passing through two polarizing filters is given by Malus's law:$$I = I_0 \cos^2 	heta$$where I is the intensity of the light after passing through the filters, I0 is the intensity of the incident light, and θ is the angle between the transmission axes of the filters.In this case, 14% of the light passes through, so:$$0.14 = \cos^2 	heta$$$$	heta = \cos^{-1} \sqrt{0.14} = 58°$$

Unpolarized Light Is Incident Upon Two Polarization Filters That Do