If there is zero absorption in the polar...

If there is zero absorption in the polaroid and if the intensity of plant-polarized light coming out of polaroid is `A^2` , then the intensity of the incident beam will be

`A^2`

`A^2/2`

`2A^2`

None of these

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Two 'crossed' polaroids A and B are placed in the path of a light-beam. In between these, a third polaroid is C is placed whose polarisation axis makes an angel theta with a polarisation axis of the polaroid A. If the intensity of light emerging from the poloaroid a is I_(o) then show that the intensity of light emerging from polaroid B will be 1/4I_(o) sin^(2)theta.

Two polaroid A and B are kept in crossed position. How should a third polaroid C be placed between them so that the intensity of polarized light transmitted by polaroid B reduces to (1)/(8)th of the intensity of unplarised light incident on A ?

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An unpolarized light with intensity 2I_(0) is passed through a polaroid. The resultant intensity of the transmitted light will be

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