One centimetre on a scale is divided into 20 equal divisions. The least count of this scale is
(A) 20 cm
(B) 1 mm
(C) 0.1 mm
(D) 0.5 mm.
not in scale
One centimetre on a scale is divided into 20 equal divisions. The least count of this scale is
(A) 20 cm
(B) 1 mm
(C) 0.1 mm
(D) 0.5 mm.
not in scale