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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 : `0` mm
Circular scale reading : `52` divisions
Given that `1` mm on main scale corresponds to `100` divisions of the circular scale.
The diameter of wire from the above data is :

A

`0.052` cm

B

`0.026` cm

C

`0.005` cm

D

`0.52` cm

Text Solution

Verified by Experts

The correct Answer is:
A
Screw pitch `=1mm`
`:.` least count `=(1)/(100)mm=0.01mm=0.001cm`
`:.` Diameter of the wire is `52xx0.001cm=0.052cm`
So, the correct choice is `(a)`.
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