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Two slits speet 0.25 mm apart are placed...

Two slits speet 0.25 mm apart are placed 0.75 m from a screen and illuminated by coherent light with a wavelength of 650 nm. The intensity at the center of the central maximum `(theta = 0^(@))` is `I_(0)`. The distance on the screen from the center of the central maximum to the point where the intensity has fallen to `I_(0) // 2` is nearly

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