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An unpolarised beam of intensity I(0) fa...

An unpolarised beam of intensity `I_(0)` falls on a polaroid . The intensity of the emergent light is

A

`I_(0)//4`

B

zero

C

`I_(0)//2`

D

`I_(0)`

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The correct Answer is:
C
When unpolarised beam of light of intensity `I_(0)` passes through a polaroid , the intensity of the emergent light is `I_(0)//2`.
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