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An unpolarized beam of light of intensity $\mathrm{I}_{0}$ passes through two linear polarizers making an angle of $30^{\circ}$ with respect to each other. The emergent beam will have an intensity -
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$\frac{3 \mathrm{I}_{0}}{8}$
$\mathrm{I}_{0} \frac{\text { Firet }}{\text { Polarizer }} \mathrm{I}_{0} / 2 \frac{\text { Malus law }}{\text { il polarizer }} \rightarrow\left(\frac{\mathrm{I}_{0}}{2}\right) \cos ^{2} 30^{\circ}$
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