MHT CET 2025 Physics question
Four polaroids are placed such that the optic axis of each is inclined at an angle of with the optic axis of the preceding one. If unpolarised light of intensity '' falls on the first polaroid, the intensity of light transmitted from the fourth polaroid is
Answer: (B)
Solution
The first polaroid transmits half of the unpolarised light: . Each subsequent polaroid, inclined at to the previous one, applies Malus' law with factor . There are three further polaroids,
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