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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsPolarizationEasy2 minPYQ_2020

PhysicsEasysingle choice

In a system of two polarisers, it is found that the intensity of light from the second polarizer is half from that of the first polariser. The angle between their pass axes is

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Answer:

Solution:

According to Malus law,

$I = I_{0} \cos^{2} θ$

Here, $I = \frac{I_{0}}{2}$

Now, $\frac{I_{0}}{2} = I_{0} \cos^{2} θ$

$\Rightarrow \cos^{2} θ = \frac{1}{2}$

$\Rightarrow \cos θ = \frac{1}{\sqrt{2}}$

$\Rightarrow θ = \cos^{- 1} \frac{1}{\sqrt{2}} = 45 °$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Polarization

⏱ 2mℹ️ Source: PYQ_2020

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