Three identical polaroid sheets \(P_1, P_2, P_3\) are oriented so that pass axis of \(P_2\) and \(P_3\) are inclined to \(P_1\) at 60° and 90° respectively. A monochromatic source of intensity \(I_0\) is used to pass through \(P_1, P_2, P_3\). Intensities after passing through \(P_1, P_2, P_3\) will be respectively :
(A) \(I_0, \frac{I_0}{2}, \frac{I_0}{8}\)
(B) \(\frac{I_0}{2}, \frac{I_0}{8}, \frac{I_0}{32}\)
(C) \(\frac{I_0}{2}, \frac{I_0}{8}, \frac{3 I_0}{32}\)
(D) \(I_0, \frac{I_0}{2}\), zero
Choose the correct answer from the options given below :

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.