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A screw gauge gives the following readin...

A screw gauge gives the following reading when used to measure the diameter of a wire. Main scale reading `=0mm`, circular scale reading `=52` divisions. Given that `1mm` on main scale corresponds to `100` divisions of the circular scale. The diameter of the wire from the above data is

A

0.052 cm

B

0.026 cm

C

0.05 cm

D

0.52 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`"L.C."=(1)/(100)mm`
`"Diameter of wire"=MSR+CSRxxL.C.`
`=0+(1)/(100)xx52=0.52 mm=0.052 cm`
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