What angle (in degrees) is needed between the direction of polarized light and the axis of a polarizing filter to cut its intensity to one-seventh of its initial value

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Chris Aelbrecht asked Feb 4, 2023

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What angle (in degrees) is needed between the direction of polarized light and the axis of a polarizing filter to cut its intensity to one-seventh of its initial value

Physics
high-school

Chris Aelbrecht asked Feb 4, 2023

by Chris Aelbrecht

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9 votes

Answer:

I = I0 cos^2 θ

cos^2 θ = I / I0 = 1/7

cos θ = (1 / 7)^1/2 = .378

θ = 67.8 deg

Jokuskay answered Feb 7, 2023

by Jokuskay

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