MHT CET 2026 Physics question
An unpolarised light of intensity 64 Wm passes through three polarizers successively such that the transmission axis of last polarizer is crossed with the first. The intensity of the emerging light is 6 Wm. The angle between the transmission axis of the first two polarizers is
Answer: (A)
Solution
An unpolarised beam of intensity 64 W/m is halved by the first polarizer: W/m. If the angle between the first two axes is , then by Malus' law . The last axis is crossed with the first, so it makes with the second: $ = (90°-θ) =
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