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The circular scale of a screw gauge has ...

The circular scale of a screw gauge has 50 divisions and pitch of 0.5 mm. Find the diameter of sphere. Main scale reading is 2 -

A

`1.2`

B

`1.25`

C

`2.207`

D

`2.25`

Text Solution

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The correct Answer is:
A
Least count `= (0.5)/(50) = 0.01 mm`
Diameter of sphere
`= 2 xx 0.5 + (25 - 5)xx 0.01 = 1.2 mm`
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