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.

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