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As polaroid examines two adjacent plane ...

As polaroid examines two adjacent plane polarised beam A and B whose planes of polarisation are mutually perpendicular. In the first position of the analyser, beam B shows zero intensity. From this position a rotation `30^(@)` shows that thebeams have same intensity. The ratio of intensity of the two beam `I_(Z) & I_(B)`

A

`1 : 3`

B

`3 : 1`

C

`sqrt(3) : 1`

D

`1 : sqrt(3)`

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