Question

Unpolarized light with initial intensity of Io goes through two linear polarizers. The first polarizer has a transmission axis at an angle of 45 with respect to the vertical and the second polarizer has a transmission axis at an angle of 60 with respect to the vertical.

28) What is the final intensity of light?

a) 0.500 Io

b) 0.467 Io

c) 0.250 Io

d) 0.125 Io

e) 0

29) If a third polarizer with a transmission axis at an angle of 90 to the vertical, where should it be placed to maximize the intensity of transmitted light?

a) before the first polarizer

b) between the polarizers
c) after the second polarizer

30) Where should this third polarizer be placed to minimize the intensity of transmitted light?

a) before the first polarizer

b) between the polarizers
c) after the second polarizer

Please show work

Answer 1