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  4. Two Nicols are oriented with their principal planes making an angle of 60°.The percentage of incident unpolarized light which passes through the system is

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Q. Two Nicols are oriented with their principal planes making an angle of $60^{\circ}$.The percentage of incident unpolarized light which passes through the system is

Wave Optics

Solution:

Intensity of polarized light from first polarizer$= \frac{100}{2} = 50\%$
$I =50 cos^{2} 60^{\circ} = \frac{50}{2} = 12.5\%$