Question

When light of an unknown polarization is examined with a polaroid it is found to exhibit maximum intensity (I )along y-axis and minimum intensity (2I/3) along x-axis.
The intensity transmitted through a polaroid with pass axis at 45°to y -axis (in x-y plane) is
1)5I/3
2)I/2
3)5I/6
4)I/4

Answer 1

Because max intensity is I, and min intensity 2I/3, then fit only 5I/6

Answer 3) 5I/6