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PhysicsJEE Main 23 Jan 2026, Shift 1·Q24·Numerical·Easy–moderate

Wave Optics · Interference

In two separate Young's double-slit experimental set-ups, two monochromatic light sources of different wavelengths are used to get fringes of equal width. The ratios of the slit separations and that of the wavelengths of light used are 2 : 1 and 1 : 2 respectively. The corresponding ratio of the distances between the slits and the respective screens (D1/D2)(D_1/D_2) is .

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