Unpolarized light with intensity I_0 is incident on two polarizing filters

gamau6v

gamau6v

Answered question

2021-11-22

Unpolarized light with intensity I0 is incident on two polarizing filters. The axis of the first filter makes an angle of 60.0 with the vertical, and the axis of the second filter is horizontal. What is the intensity of the light after it has passed through the second filter?

Answer & Explanation

Todd Williams

Todd Williams

Beginner2021-11-23Added 18 answers

As I=I0cos2ϕ
After the first filter I=I02
After the second filter,
I=(12I0)cos2ϕ, which gives
I=(12)I0cos230=0.375I0
Result: I=0.375I0

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