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in a screw gauge , there are 50 divisi...

in a screw gauge , there are 50 divisions on its cap and pitch of screw is 1 mm when is placed between studs then it gives 3 divisons on main scale and 15 circular scale division soincides with base line ,Diameter of the wire is -

A

1.80 mm

B

3.30 mm

C

3.15 mm

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
`LC =(1)/(50)=.02 mm , MSR =3xx1mm =3mm`
CSR `=15xx.02 =3.0mm,`
diameter of wire =3.30 mm
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