Two polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light $I$0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 45o with that of P1. The intensity of transmitted light through P2 is

Question

Two polaroids P₁ and P₂ are placed with their axis perpendicular to each other. Unpolarised light $I$₀ is incident on P₁. A third polaroid P₃ is kept in between P₁ and P₂ such that its axis makes an angle 45^o with that of P₁. The intensity of transmitted light through P₂ is

${{{I_0}} \over 4}$

${{{I_0}} \over 8}$

${{{I_0}} \over 16}$

${{{I_0}} \over 2}$

Solution

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