(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two sheets of Polaroid are placed on top of each other with an angle φ between their pass

directions. Calculate be the ratio of transmitted to incident intensity for initially unpolarised

light if φ = 30°.

I copied the question exactly, I'm pretty sure that typo wasn't on purpose but I left it there anyway.

2. Relevant equations

I0 = I'/2

Malus's Law

I = I0 cos^2 θ

3. The attempt at a solution

I used the equation above to do:

= I0 cos^2(30)

cos^2(30)=.75

.75 x .75 = .5625 = 9/16

= I0(9/16)

not sure if that is right

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# Finding Incident Intensity for Unpolarized Light

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