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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsPolarizationEasy2 minQB

PhysicsEasysingle choice

Two polaroids are crossed. If now one of them is rotated through an angle of $30 °$ and unpolarised light of intensity $I_{0}$ is incident on the first polaroid, then the intensity of transmitted light will be

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Answer:

Solution:

Intensity through first polaroid, $I_{1} = \frac{I_{0}}{2}$

$∴$ Intensity of transmitted light, $I = I_{1} \cos^{2} θ$

$= \frac{I_{0}}{2} \cos^{2} (90^{o} - 30^{o})$

$= \frac{I_{0}}{2} \cos^{2} 60^{o}$

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

Stream:JEESubject:PhysicsTopic:Wave OpticsSubtopic:Polarization

⏱ 2mℹ️ Source: QB

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