Question

Two polarizers have their transmission axes at an angle of . Unpolarized light of intensity I is incient on the firsit polarizer. What is the intensity of the light transmitted by the second polarizer? A. I cos o B. 0.5 I cos C. 0.25 I cos-o D. I cose E. 0.5 I cose

Answer 1

Answer:

$0.5ICOS^2\Theta$

Explanation:

When the light of the intensity I passes through the first polarizer then the intensity of the light will become $I_1=\frac{I}{2}$

When this light of intensity $I_1$ is passes through second polarizer then according to malus law of intensity intensity will become $I_2=I_1COS^2\Theta$

As $I_1=\frac{I}{2}$

So finally intensity will become $I_2=0.5ICOS^2\Theta$