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Two polaroids are in crossed situation and intensity of polarized light is zero. If third polaroid is placed in between such that it makes half angle with optic axis, than angle between two polaroids, then intensity of polarized light will be ....... Where I_(0) is maximum intensity of incident light. |
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Answer» `(I_(0))/(2)` Now, intensity of incident light of secon polaroid is `I_(1)=I_(2)` hence intensity of polarize light from it, `I..=(I_(1))/(2)cos^(2) theta` `=(I_(0))/(4)cos^(2)45^(@)` `=(I_(0))/(4)XX(1)/(sqrt((2)^(2)))=(I_(0))/(8)` |
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