Answer:
[tex]0.5ICOS^2\Theta[/tex]
Explanation:
When the light of the intensity I passes through the first polarizer then the intensity of the light will become [tex]I_1=\frac{I}{2}[/tex]
When this light of intensity [tex]I_1[/tex] is passes through second polarizer then according to malus law of intensity intensity will become [tex]I_2=I_1COS^2\Theta[/tex]
As [tex]I_1=\frac{I}{2}[/tex]
So finally intensity will become [tex]I_2=0.5ICOS^2\Theta[/tex]
