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A polaroid is placed at `45^@` to an incoming light of intensity `I_0`. Now the intensity of light passing through polaroid after polarisation would b

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A polaroid is placed at `45^@` to an incoming light of intensity `I_0`. Now the intensity of light passing through polaroid after polarisation would be
A. `I_(0)`
B. `I_(0)//2`
C. `I_(0)//4`
D. zero
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Correct Answer - B
`I=I_(0) cos^(2)theta = I_(0)cos^(2)45 = (I_(0))/(2)`
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