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Upolarised light of intensity I passes t...

Upolarised light of intensity I passes through an ideal polariser A. Another identical polariser B is placed behind A. The intensity of light beyond B is found to be `(I)/(2)`. Now another identical polariser C is placed between A and B. The intensity beyond B is now found to be `(I)/(8)`. The angle between polariser A and C is

A

`45^(@)`

B

`60^(@)`

C

`0^(@)`

D

`30^(@)`

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