Coherent light with wavelength λ = 600 nm falls on two very narrow closely spaced slits and the interference pattern is observed on a screen that is 4.00 m from the slits. Near the center of the screen the separation between adjacent maxima is 2.00 mm. The distance between the two slits is
(a) 2.40 mm
(b) 1.40 mm
(c) 1.20 mm
(d) 1.00 mm
(e) 0.400 mm
(f) none of the above answers
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