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A mixture of plane polarised and unpolar...

A mixture of plane polarised and unpolarised light falls normally on a polarising sheet. On rotating the polarising sheet about ther direction of the incident beam, the transmitted intensity varies by a factor of 3. The ratio of intensities `I_p` and `I_p` of the polarised and unpolarised components in the incident beam is

A

`1:1`

B

`1:2`

C

`2:3`

D

`3:4`

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The correct Answer is:
A
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