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On measuring diameter of a wire with hel...

On measuring diameter of a wire with help of screw gauge, main scale reading is `1mm` and `6th` division of circular scale lying very reference line. On measuring zero error, it is found that zero of circular scale has advanced from references line by `3` divisions on circular scale, then corrected diameter is

A

`1.09mm`

B

`1.06mm`

C

`1.03mm`

D

`1.60mm`

Text Solution

Verified by Experts

The correct Answer is:
A
Observed reading `=1mm+6xx0.01mm`
`=1.06mm`
Zero error`=-0.03mm`
Zero correction`=+0.03mm`
Corrected reading `=1.06+0.03=1.09mm`
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