Initially unpolarized light with an intensity of 240W/m2 is incident on a series of two polarizers. What should be the angle between to the axes of the two polarizers such that the transmitted intensity after the second polarizer is 37.5% of the incident one?
The Attempt at a Solution
I1=.5Iocos2[tex]\theta[/tex] (unpolarized light is reduced by halve after the first polarizer)
this can also be written at 2I1=Io
We are given that I2=0.375I1
2I1=Io so I2 really equals 0.75I1
0.75I1 = I1cos2[tex]\theta[/tex]
[tex]\theta[/tex] = 30 degrees
Did I do this correctly?
Thanks for all your help...