Two Polaroid filters are initially crossed. The analyzer is rotated through an angle of 55.0 degrees. Find the fraction of the intensity incident on the polarizer which passes the analyzer.(adsbygoogle = window.adsbygoogle || []).push({});

I used

I1=1/2 Io

I2= I1cos

I2= 1/2 Io cos^2(theta)

= 1/2 Io cos227.5°

= .393 Io

Is this correct or should the angle be 55 degrees??

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Fraction Of The Intensity Incident

**Physics Forums | Science Articles, Homework Help, Discussion**