In a screw gauge, 5 complete rotations of the screw cause if to move a linear distance of `0.25 cm`. There are `100` circular scale divisions. The thickness of a wire measured by this screw gauge gives a reading of 4 main scale divisions and 30 circular scale divisions. Assuming negligible zero error, the thickness of the wire is :
A
`0.3150cm`
B
`0.4300 cm`
C
`0.2150 cm`
D
`0.0430 cm`
Text Solution
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The correct Answer is:
C
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