Class 12th Physics 2017 Set3 Delhi Board Paper Solution
A narrow beam of unpolarised light of intensity I0 is incident on a polaroid P1 . The light transmitted by it is then incident on a second polaroid P2 with its pass axis making an angle of 60° relative to the pass axis of P1 . Find the intensity of the light transmitted by P2 .
After passing from P1, the intensity of the light will be I0 / 2.
Now after passing from P2, the new intesity of the light will be I0 / 2 cos2 θ.
Intensity of light after transmission from polaroid:
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