Question #208667

The irradiance of a beam of natural light is 400 W/m². It impinges on the first of two consecutive ideal linear polarizers whose transmission axes are 40.0° apart. How much light emerges from the two?


1
Expert's answer
2021-06-21T11:39:24-0400

I=I0cos⁡2α,I=I_0\cos^2\alpha,

I=400⋅cos⁡240°=235 Wm2.I=400\cdot \cos^2 40°=235~\frac{W}{m^2}.


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