Question

Light known to be polarized in the horizontal direction is incident on a polarizing sheet. it is observed that only 15 percent of the intensity of the incident light is transmitted through the sheet. what angle does the transmission axis of the sheet make with the horizontal

Answer 1

If only 15% of the light gets through, then the angle must be 15% LESS than 90degrees.

90 x 0.85 = 76.5 degrees