Consider the polaroids $P_1$ and $P_2$ kept with axis parallel to the other. Now the polaroid $P_2$ is rotated from 0 to $2 \pi$ with respect to $P_1$. The variation of intensity of transmitted light through $P_2$ will be shown as
Answer & explanation
Correct answer: option 1
The correct answer is Option (1).
Intensity of polarised light
$I=\frac{I_0}{2} \cos ^2 \theta$
