The average intensity of light emerging from a polarizing sh

The average intensity of light emerging from a polarizing sheet is 0.773 W/m^2, and that of the horizontally polarized light incident on the sheet is 0.892 W/m^2. Determine the angle that the transmission axis of the polarizing sheet makes with the horizontal. Number Units

Solution

Using Malus\' Law,

I = I0 cos^2 @

I - intensity of polarized light

I0 - intensity of incident light

0.773 = 0.892 (cos@)^2

cos@ = 0.931

@ = 21.42 deg