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Physics · 2013
JEE Main 2013 · 2013-04-07 Offline · Q41
A beam of unpolarised light of intensity I_0 is passed through a polaroid A and then through another polaroid B which is oriented so that its…
A beam of unpolarised light of intensity $\displaystyle \mathrm{I}_0$ is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an angle of $\displaystyle 45$° relative to that of A. The intensity of the emergent light is :
Official answer
(4)
$\displaystyle \mathrm{I}_0 / 4$
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