Three polarizers are arranged as shown in the figure.

slaggingV

slaggingV

Answered question

2021-02-24

Three polarizers are arranged as shown in the figure. If theincident beam of light is unpolarized, and has an intensity of 1.60Wm2, find the transmitted intensity for each of thefollowing cases.
image
(a) when θ2=22.3 and θ3=42.6
(b) when θ2=42.26 and θ3=22.3

Answer & Explanation

hosentak

hosentak

Skilled2021-02-25Added 100 answers

I = 1.6 Wm2 
since the light is initially unpolarized
I=(0.5)(1.6 Wm2)=0.8Wm2 
Then use I=I0cos2θ 
a.I=0.8cos2(22.3)=0.684Wm2 
I=0.684cos2(42.622.3)=601.67mWm2 
b. I=0.8cos2(42.6)=0.433Wm2 
I=0.433cos2(22.342.6)=879.6mWm2

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