 #1
johnsobertstamos
 10
 1
 Homework Statement:
 A series of polarizers are each placed at a 12 ∘ interval from the previous polarizer. Unpolarized light is incident on this series of polarizers. How many polarizers does the light have to go through before it is 1/9 of its original intensity?
 Relevant Equations:

I = Io (cos theta)^2
Iintensity polarized = 1/2 Intensity unpolarized
I set up the equation
.5((cos 12)^2)^x = 1/9
Solving for x gets me 34.037
34 + 1 = 35
I've entered answers of both 34 and 35 and both have been marked as wrong. Does anybody know what I'm doing wrong here?
.5((cos 12)^2)^x = 1/9
Solving for x gets me 34.037
34 + 1 = 35
I've entered answers of both 34 and 35 and both have been marked as wrong. Does anybody know what I'm doing wrong here?
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