The pitch of a screw gauge is 0.5 mm and there are 100 divisions on it circular scale. The instrument reads +2 divisions when nothing is put in-between its jaws. In measuring the diameter of a wire, there are 8 divisions on the main scale and 83rd division coincides with the reference line.(i) The least count of the instrument is (A) 0.005 cm (B) 0.01 cm (Correct Answer) (C) 0.001 cm (D) 0.015 cm how is B correct ans explain pls. ans should be 0.5/100 mm0.005 mm acccording to me.