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Q.

Two polaroids are oriented with their planes perpendicular to incident light and transmission axis making an angle of $30^{0}$ with each other. What fraction of incident unpolarized light is transmitted?

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a

$\frac{1}{2}$

b

$\frac{8}{3}$

c

$\frac{3}{8}$

d

$\frac{1}{4}$

answer is C.

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Detailed Solution

$I_{2} = I_{1} \cos^{2} 30 = \frac{I_{0}}{2} \times \frac{3}{4} = \frac{3}{8} I_{0}$

$\frac{I_{2}}{I_{0}} = \frac{3}{8}$

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