Two Polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light I0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 450 with that of P1. The intensity of transmitted light through P2 is :

I1=I02I2=I02cos245∘=I04I3=I04cos245∘=I08

Two Polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light I0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 450 with that of P1. The intensity of transmitted light through P2 is :

I1=I02I2=I02cos245∘=I04I3=I04cos245∘=I08

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Two Polaroids P₁ and P₂ are placed with their axis perpendicular to each other. Unpolarised light I₀ is incident on P₁. A third polaroid P₃ is kept in between P₁ and P₂ such that its axis makes an angle 45⁰ with that of P₁. The intensity of transmitted light through P₂ is :

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$\frac{I_{0}}{4}$

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

$\frac{I_{0}}{16}$

$\frac{I_{0}}{2}$

answer is B.

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$I_{1} = \frac{I_{0}}{2}$

$I_{2} = \frac{I_{0}}{2} \cos^{2} 45^{\circ} = \frac{I_{0}}{4}$

$I_{3} = \frac{I_{0}}{4} \cos^{2} 45^{\circ} = \frac{I_{0}}{8}$

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Two Polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light I0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 450 with that of P1. The intensity of transmitted light through P2 is :

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Two Polaroids P₁ and P₂ are placed with their axis perpendicular to each other. Unpolarised light I₀ is incident on P₁. A third polaroid P₃ is kept in between P₁ and P₂ such that its axis makes an angle 45⁰ with that of P₁. The intensity of transmitted light through P₂ is :