A monochromatic light source illuminates a double slit and the resulting interference pattern is observed on a distant screen. Let d be the center-to-center slit spacing, a the individual slit width, D the screen-to-slit distance, and ℓ the adjacent dark line spacing in the interference pattern. The wavelength of the light is then:

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The Answer of A monochromatic light source illuminates a double slit and the resulting interference pattern is observed on a distant screen. Let d be the center-to-center slit spacing, a the individual slit width, D the screen-to-slit distance, and ℓ the adjacent dark line spacing in the interference pattern. The wavelength of the light is then:

A Monochromatic Light Source Illuminates a Double Slit and the Resulting