Unpolarized light passes through two polarizers.Find the fraction of light from

Question

Unpolarized light passes through two polarizers.Find the fraction of light from the first polarizer that gets through the second when the angle between their transmission axes is 15degrees. Find the fraction of light from the first polarizer that gets through the second when the angle between their transmission axes is 45degrees . Find the fraction of light from the first polarizer that gets through the second when the angle between their transmission axes is 70degrees. Find the fraction of light from the first polarizer that gets through the second when the angle between their transmission axes is 90degrees.

Explanation / Answer

a)I=I0cos^2()

I/I0=cos^2(15)=0.93       i.e93%

b)I/I0=cos^2(45)=0.5     i.e 50%

c)I/I0=cos^2(70)=0.11    i.e 11%

d)I/I0=cos^2(90)=0

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