MHT CET 2025 Physics question
Two polaroids are oriented with their planes perpendicular to incident light and transmission axis making an angle 30 with each other. What fraction of incident unpolarised light is transmitted? ()
Answer: (D)
Solution
Unpolarised light of intensity passing through the first polaroid (polariser) is reduced to and becomes plane polarised. The second polaroid (analyser), with its axis at to the first, transmits by Malus's law \dfrac{I_0}{2}$
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