The pitch of a screw gauge is 
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
B
C
D
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Verified by ExpertsThe correct answer is:
A
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