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Certain sunglasses use a polarizing mate...

Certain sunglasses use a polarizing material to reduce the intensity of light reflected from shiny surfaces, such as water or the hood of a car. What orientation of polarization should the material have in order to be most effective? 

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The glare can be avoided by wearing the sun glass of material whose polarisation axis is vertical. In this situation most of the polarised light reflected from the object will be cut off.
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FIITJEE-ELECTROMAGNETIC WAVE & WAVE OPTICS-SOLVED PROBLEMS (subjective )
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