Question

Which equation best represents the intensity of light coming out of a secondpolarizing filter is equal to the intensity of polarized light coming out of a firstpolarizing filter multiplied by the cosine, squared, of the angle between thepolarizing axes of the two filters?

Answer 1

Let the angle between the polarizing axes of the two filters be

`\theta`

Let the intensity of polarized light coming out of the first polarizing filter be I1.

Then the intensity of the second polarizing filter will be

`I_2=I_1cos^2\theta`

Thus, the correct option is B.