Three polarizing filters are placed on top of one another. If the angle between

Question

Three polarizing filters are placed on top of one another. If the angle between the first two filters is 60 degrees and the angle between the first and the third is 70 degrees, find the percentage of light exiting the last polarizing filter. Three polarizing filters are placed on top of one another. If the angle between the first two filters is 60 degrees and the angle between the first and the third is 70 degrees, find the percentage of light exiting the last polarizing filter. Three polarizing filters are placed on top of one another. If the angle between the first two filters is 60 degrees and the angle between the first and the third is 70 degrees, find the percentage of light exiting the last polarizing filter.

Explanation / Answer

According to the question

I x cos^2(60)

then we get I/4

then I/4 x cos^2(70)

cos^2(70)=0.11

so I/4 x 0.11

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