Question
Question: The pitch of a screw guage is 1mm and there are 100 divisions on its circular scale. During the proc...
The pitch of a screw guage is 1mm and there are 100 divisions on its circular scale. During the process of finding the zero error, a student finds that the zero of the circular scale lies 4 divisions below the reference line. When an experimental steel wire is placed between the studs two main scale divisions are clearly visible and 57 divisions on the circular scale are observed. The diameter of the wire is-
A
2.53 mm
B
2.61 mm
C
2.57 mm
D
2.63 mm
Answer
2.53 mm
Explanation
Solution
2 + 0.57 – 0.04 = 2.53 mn