JEE PHYSICS MCQ: WAVE OPTICS

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The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringe from the centre is

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Correct option: A

Option A (2) is correct because the intensity is proportional to the square of the cosine of half the phase difference, and the phase difference at one-quarter of the fringe width is

\pi/2

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