- #1

EmoryGirl

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## Homework Statement

A beam of polarized light has an average intensity of 13.2 W/m2 and is sent through a polarizer. The transmission axis makes an angle of 27.5° with respect to the direction of polarization. Determine the rms value of the electric field of the transmitted beam.

## Homework Equations

## The Attempt at a Solution

This is what I have done to try this problem:

I used E

_{rms}= square root of: [I(4pi * 10^-7)(3 x 10^8)]

I used I = Iocos^2theta

I = (13.2)(cos27.5)^2

I = 10.3856

According to the homework program I am using, the answer I have gotten is not correct...I am not sure what I am doing wrong. Thanks in advance!