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NEET UG PHYSICS MCQ: WAVE OPTICS
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A beam of ordinary unpolarised light passes through a tourmaline crystal and then it passes through another tourmaline crystal , which is oriented such that its principal plane is parallel to that of . The intensity if emergent light is . Now is rotated by about the ray. The emergent ray will have an intensity
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Correct option: C
The correct answer is C () because the intensity is reduced by a factor of cos²(θ) after passing through the second polarizer, and the initial intensity is already halved by the first polarizer.
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