In a Young's double-slit experiment illuminated with white light, which first-order monochromatic bright fringe lies closest to the central white maximum?
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Question

In a Young's double-slit experiment illuminated with white light, which first-order monochromatic bright fringe lies closest to the central white maximum?

G1 Physics · Accepted Answer

For first-order bright fringes, y = λD ÷ d. Thus y is proportional to wavelength. Violet has the smallest visible wavelength, so its first bright fringe is closest to the centre. Correct option: D.