The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at 22. 5 ∘ from the polarization axis of one of the polaroid, is ( I 0 is the intensity of polarised light after passing through the first polaroid):NEET 2025

Initially two polaroids are crossed i.e. 9 0 ∘ After passing from first polaroid intensity is I 0 ⇒ 4 I 0 sin 2 ( 2 θ ) ⇒ 4 I 0 sin 2 ( 2 × 22.5 ) ⇒ 8 I 0

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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsPolarizationMedium2 minPYQ_2025

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The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at $22. 5^{\circ}$ from the polarization axis of one of the polaroid, is ( $I_{0}$ is the intensity of polarised light after passing through the first polaroid):NEET 2025

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Answer:

Solution:

Initially two polaroids are crossed i.e. $9 0^{\circ}$
After passing from first polaroid intensity is $I_{0}$
$\Rightarrow \frac{I _{0}}{4} sin^{2} (2 θ) \Rightarrow \frac{I _{0}}{4} sin^{2} (2 \times 22.5) \Rightarrow \frac{I _{0}}{8}$

Stream:NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Polarization

⏱ 2mℹ️ Source: PYQ_2025

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