In Young's double slit experiment, the distance between slits and the screen is 1.0m and monochromatic light of 600 nm is being used. A person standing near the slits is looking at the fringe pattern. When the separation between the slits is varied, the interference pattern disappears for a particular distance d0 between the slits. If the angular resolution of the eye is 601∘ , the value of d0 is close to : [JEE(Main) 2016, Online]
(1) 1 mm
(2) 3 mm
(3) 4 mm
(4) 2 mm