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Two slits parallel to each other 0.2 mm are illuminated by monochromatic light. In a screen placed 1 m from the slits, there is a separation of 2.5 mm between the first light stripe and central stripe. What is the wavelength of light? a) 2 × 10^6 m b) 0.5 m c) 2 m d) 500 nm

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