# A beam of polarized light passes through a polarizing filter.When the angle between the polarizing axis of the filter and the di￾rection of polarization of the light is 45∘, the intensity of the emergingbeam is ?. If you now want the intensity to be 1.5?, what should be theangle between the polarizing axis of the filter and the original directionof polarization of the light?

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A beam of polarized light passes through a polarizing filter.
When the angle between the polarizing axis of the filter and the di￾rection of polarization of the light is 45∘
, the intensity of the emerging
beam is ?. If you now want the intensity to be 1.5?, what should be the
angle between the polarizing axis of the filter and the original direction
of polarization of the light?

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Step 1

let Io be the initial intensity,

the final intensity of light is,

Step 2

substitute the known values,

Step 3

when the final intensity is 0.5 or the ...

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