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AP Physics 2
14.8 Double-Slit Interference and Diffraction Gratings
14.7 Diffraction
AdvancedMCQDrawing RepresentationsProportional AnalysisConceptual12.9k
A 2D line plot showing relative light intensity I over I_0 on the vertical axis ranging from 0.0 to 1.0, versus position y in centimeters on the horizontal axis ranging from -3.0 cm to +3.0 cm. The curve is symmetric about y = 0. At y = 0, the intensity reaches a maximum peak of 1.0. The central peak slopes smoothly downward on both sides, reaching zero intensity at y = -1.2 cm and y = +1.2 cm. Outside the central peak, there are smaller secondary peaks centered at y = -1.8 cm and y = +1.8 cm, each reaching a peak height of approximately 0.05. The curve drops back to zero at y = -2.4 cm and y = +2.4 cm. Axis labels are clearly marked: horizontal axis labeled y (cm) with ticks at -3.0, -2.0, -1.0, 0, 1.0, 2.0, 3.0, and vertical axis labeled Relative Intensity I/I_0 with ticks at 0.0, 0.2, 0.4, 0.6, 0.8, 1.0. No other labels, lines, text, or axes appear.
Relative light intensity vs. position on a screen.
Monochromatic light of wavelength \(\lambda\) passes through an aperture system and forms a light intensity pattern on a viewing screen located at a distance \(D\) from the aperture. The relative light intensity \(I/I_0\) as a function of position \(y\) on the screen is shown in the graph. Which of the following claims correctly identifies the aperture configuration responsible for this pattern and accurately predicts how the intensity pattern changes if a second identical slit is added parallel to the first at a center-to-center distance \(d > a\)?

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