Physics Help Forum polarization

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 Sep 8th 2010, 03:58 AM #1 Member   Join Date: Jan 2010 Posts: 48 polarization hiiii... please read the question in attachment...... according to malus law intensity of beam passed is I=I(initial) (cos A)^2 where I(intital) = intensity of beam incident, A = angle between plane of polarized light and axis of polarizor... i am not getting what will be intentisity after passing through polarizor P.....plz help Attached Thumbnails
Sep 9th 2010, 03:33 AM   #2
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 Originally Posted by vyomictor hiiii... please read the question in attachment...... according to malus law intensity of beam passed is I=I(initial) (cos A)^2 where I(intital) = intensity of beam incident, A = angle between plane of polarized light and axis of polarizor... i am not getting what will be intentisity after passing through polarizor P.....plz help
It is B.

IP = Io/2

Max IQ = Io/2*cos^2(π/4) = Io/4

Max ΙR = Io/4*cos^2(π/4) = Ιο/8

Last edited by sa-ri-ga-ma; Sep 9th 2010 at 03:35 AM.

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