Question

Unpolarised light is passed through a Polaroid p1.when this polarised beam passed through another Polaroid p2 makes angle theta with the pass axis of p then write the expression for the polarised beam passing through p2. Draw a plot showing the variation of intensity when theta varies from 0 to 2 pie

Answer 1

I = Io x cos^2(theta)
Io= intensity of incident unpolarised light