Q 12-10-023NEETJEE MainEasy
Unpolarised light of intensity $I_0$ passes through two polaroids whose axes are at $60°$. The intensity of the emergent light is
Answer: (D) $\dfrac{I_0}{8}$
After the first: $\dfrac{I_0}{2}$. Malus's law: $\dfrac{I_0}{2}\cos^2 60° = \dfrac{I_0}{8}$.
Solution by Sreeraj P, M.Sc Physics