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Explain with diagram, how plane polarize...

Explain with diagram, how plane polarized light can be produced by scattering of sunlight . An incident beam of light of intensity `I_(0)` is made to fall on a polaroid A. Another polaraid B is so oriented with respect to A that there is no light emerging out of B. A third polaroid C is now introduced mid-way between A and B is so oriented that its axis bisects that angle between the axes of A and B. Calculate the intensity of light transmitted by A,B and C.

Text Solution

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`I_(1) = I_(0)/2 `
`I_(3) = I_(1) cos^(2) 45^(@) = I_(1) xx 1/2 = I_(0)/2 xx 1/2 = I_(0)/4`
`I_(2) = I_(3) cos^(2)45^(@) " "[:' theta = 90^(@) - 45^(@) = 45^(@) ]`
`I_(2) = I_(3) xx 1/2 = I_(0)/4 xx 1/2 = I_(0)/8`


`= (I_(0))/(2).(1)/(2).(1)/(2) = (I_(0))/(8)`
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