Two polarising sheet have their polarising directions parallel so that the intensity of the trasmitted light in maximum. Through what angle must the either sheet be turned if the intensity is to drop by one- half?

Two polarising sheet have their polarising directions parallel so that

1.	Two polarising sheet have their polarising directions parallel so that the intensity of the trasmitted light in maximum. Through what angle must the either sheet be turned if the intensity is to drop by one- half?
Answer» Solution :Here, `I = (I_(o))/(2)` Using MALUS law, `I = I_(o) cos^(2) theta` `(l_(o))/(2) = I_(o) cos^(2) theta` `cos THETS = pm (1)/(sqrt(2))` `theta pm 45^(@), pm 135^(@)`

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Two polarising sheet have their polarising directions parallel so that the intensity of the trasmitted light in maximum. Through what angle must the either sheet be turned if the intensity is to drop by one- half?

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