alleryStart learning →Polarized light of 80 W/m2 meets a polarizer at 60 degrees. What intensity emerges?
A20 W/m2
B40 W/m2
C60 W/m2
D10 W/m2
Answer & Solution
Correct answer: A. 20 W/m2
Malus' law gives I = I1 cos^2(60 degrees) = 80 x 1/4 = 20 W/m2.
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