05 Monochromatic light of wavelength 400 nm and 560 nm are incident simultaneously and normally on double slits apparatus whose

Question

05 Monochromatic light of wavelength 400 nm and 560 nm are incident simultaneously and normally on double slits apparatus whose slits separation is 0 1 mm and screen distance is 1m Distance between areas of total darkness will be a 4mm b 5 6mm c 14mm d 28mm

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