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A double-slit experiment produces an interference pattern on a screen 2.8 m away from slits. Light...

A double-slit experiment produces an interference pattern on a screen 2.8 m away from slits. Light of wavelength λ= 460 nm  falls on the slits from a distant source. The distance between adjacent bright fringes is 6.2 mm.

A) Find the distance between the two slits

B) Determine the distance to the 6th order dark fringe from the central fringe

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