What is the intensity of light after removing the second polarizer?

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SUMMARY

The discussion focuses on the intensity of light after removing the second polarizer from a stack of three polarizing filters. The initial intensity of unpolarized light is 75.0 W/cm². The relevant equation used is I = Imax cos²(θ), where θ represents the angle between the polarizing axes. The confusion arises regarding the calculation of intensity after the removal of the second polarizer, particularly in relation to the angles of the remaining filters.

PREREQUISITES
  • Understanding of polarizing filters and their function
  • Familiarity with the equation I = Imax cos²(θ)
  • Knowledge of angles in degrees and their impact on light intensity
  • Basic principles of light behavior, including unpolarized and polarized light
NEXT STEPS
  • Calculate the intensity of light after passing through a single polarizer using I = Imax cos²(θ)
  • Explore the effects of removing polarizers on light intensity in multi-polarizer systems
  • Investigate the relationship between the angles of polarizers and transmitted light intensity
  • Study real-world applications of polarizing filters in photography and optics
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Students studying optics, physics educators, and anyone interested in the principles of light polarization and its applications in various fields.

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Homework Statement



Three polarizing filters are stacked, with the polarizing axis of the second and third filters at 23.0° and 62.0°, respectively, to that of the first. If unpolarized light is incident on the stack, the light has intensity 75.0 W/cm^2 after it passes through the stack. If the incident intensity is kept constant, what is the intensity of the light after it has passed through the stack if the second polarizer is removed?

Homework Equations


I=Imaxcos2(θ)


The Attempt at a Solution



I don't understand what the question is asking. Is the light passing through multiple times? And if it is, wouldn't it just be 75(cos262°)?
 
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When the light reaches the third filter, intensity of the light is not 75 W/cm^2.
 

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