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Polarization of light

Light is send through the two-sheet polarizing system with unknown orientation of the polarizing axes (see attachment). If the ratio of the emerging intensity to the initial intensity is 0.7, is the light initially polarized or not? Prove your answer.

Please state what equations you use (if any).


Solution Summary

The solution briefly explains the basic theory of polarization of light by a polarizer and the effect of orientation of the polarizing axis on the intensity on emerging light.