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In a Young s double-slit experiment the separation y between the second-order bright fringe and the central bright fringe on a flat screen is 0.0180 m when the light has a wavelength of 425 nm. Assume that the angles that locate the fringes on the screen are small enough so that sin θ ≈ tan θ. Find the separation y when the light has a wavelength of 585 nm. |
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