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Unpolarized light of intensity 32 W//m^2...

Unpolarized light of intensity `32 W//m^2` is incident on the combination of three polaroids. The first and last polaroids are crossed. If the intensity of the light transmitted through the combination be `3 W//m^2`, then what is the angle between the transmission axes of first two polaroids ?

A

`0^@`

B

`30^@`

C

`45^@`

D

`60^@`.

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