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One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. Having recently studied optics in your physics class, you're not too surprised to see that the patch of light seems to be a circular diffraction pattern. It appears that the central maximum is about 2 cm across, and you estimate that the distance from the window shade to the wall is about 3 m . Part A Part complete Estimate the average wavelength of the sunlight (in nm ). 350 nm 450 nm 550 nm 650 nm 750 nm Previous Answers Correct Part B Estimate the diameter of the pinhole (in mm ). Express your answer in millimeters

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