   Chapter 27, Problem 98PE

Chapter
Section
Textbook Problem

Integrated ConceptsIf a polarizing filter reduces the intensity of polarized light to 50.0% of its original value, by how much are the electric and magnetic fields reduced?

To determine

By how much are the electric and magnetic field reduced

Explanation

Given info:

Intensity of transmitted light is 50% of the incident wave.

Formula used:

The intensity of the transmitted wave is related to the incident wave by

I=Iocos2θ

Here,

I is the intensity of transmitted light

Io is the intensity of incident wave

θ is the angle between the direction of polarized light and the axis of polarizing filter

Calculation:

The angle between the direction of polarized light and the axis of polarizing filter is calculated as

I=Iocos2θ

Plugging the values in the above equation

Io

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