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Unpolarised light beam of intensity I(0)...


Unpolarised light beam of intensity `I_(0)` is incident on polaroid `P_(1)`. The three polaroids are arranged in such a way that transmission axis of `P_(1)` and `P_(3)` are perpendicular to each other. Angle between the trasmission axis of `P_(2)` and `P_(3)` `60^(@)`. The intensity of the beam coming out from `P_(3)` will be:

A

10.67

B

1.8

C

16

D

5.33

Text Solution

Verified by Experts

The correct Answer is:
A

`(I_(0))/2cos^(2) theta. cos^(2)30^(20=I`
`(I_(0))/I=2/(1/4xx3/4)=32/3=10.67`
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