Question:
A beam of unpolarised light of intensity $\mathrm{I}_{0}$ is passed through a polaroid $\mathrm{A}$ and then through another polaroid $\mathrm{B}$ which is oriented so that its principal plane makes an angle of $45^{\circ}$ relative to that of $\mathrm{A}$. The intensity of the emergent light is :-
Correct Option: , 3
Solution:
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