A polaroid examines two adjacent plane polarised beams 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 of 30^(@) shows that the two beams have same intensity. The ratio of intensities of the two beams I_(A)" and "I_(B) will be

A polaroid examines two adjacent plane polarised beams A and B whose p

1.	A polaroid examines two adjacent plane polarised beams 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 of 30^(@) shows that the two beams have same intensity. The ratio of intensities of the two beams I_(A)" and "I_(B) will be
Answer» `1 : 3` `3 : 1` `SQRT(3) : 1` `1 : sqrt(3)` ANSWER :A

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