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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsPolarizationEasy2 minQB

PhysicsEasysingle choice

An unpolarized light of intensity $I_{0}$ passes through three polarizers, such that the transmission axis of last polarizer is perpendicular to that of first. If the intensity of emergent light is $\frac{3 I_{0}}{32}$ and the angle between the transmission axis of first two polarizers is $θ,$ then

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Solution:

$\frac{3 I_{0}}{32} = \frac{I_{0}}{2} c o s^{2} θ s i n^{2} θ$

$4 \cos^{2} θ \sin^{2} θ = \frac{3}{4}$

or $\sin 2 θ = \sqrt{\frac{3}{4}} = \frac{\sqrt{3}}{2}$

$θ = 30 °$

Stream:JEESubject:PhysicsTopic:Wave OpticsSubtopic:Polarization

⏱ 2mℹ️ Source: QB

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