Question

Two full turns of the circular scale of a screw gauge cover a distance of 1mm on its main scale and

has total 50 divisions. Further, it was found that it has negative error of -0.03 mm. While measuring the

diameter of a thin wire, a student notes the main scale reading of 3 mm and the number of circular scale

divisions in line the main scale as 35. Find the diameter of the wire​

Answer 1

Answer:

least count of screw gauge =0.5/50mm=0.01mm

:-reading =[main scale reading + circular scale reading *L.C] -(zero error)

=[3+35*0.01] - (0.03)

3.38mm answer

Explanation:

nice question