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A screw gauge has least count of 0.01 mm...

A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale:
The pitch of the screw gauge is:

A

0.01 mm

B

0.25 mm

C

0.5 mm

D

1.0 mm

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The pitch of a screw gauge is 1 mm and there are 100 divisions on circular scale. When the two studs of the screw gauge are touching each other, the 32^(nd) division of the circulasr scale coincides with the reference line / base line / index line on the pitch scale. When a glass plate is placed in between the studs firmly, the pitch scale reads 4 divisions and the circular scale reads 16 divisions Least count of the apparatus is

The pitch of a screw gauge is 1 mm and there are 100 divisions on circular scale. When the two studs of the screw gauge are touching each other, the 32^(nd) division of the circulasr scale coincides with the reference line / base line / index line on the pitch scale. When a glass plate is placed in between the studs firmly, the pitch scale reads 4 divisions and the circular scale reads 16 divisions Zero correction of the instrument is

Knowledge Check

  • The density of a solid ball is to be determined in an experiment. The diameter of the ball is measured with a screw gauge, whose pitch is 0.5mm and there are 50 divisions on the circular scale. The reading on the main scale is 2.5mm and that on circular scale is 20 divisions. if the measured mass of the ball has a relative error of 2% , the relative percentage error in the density is

    A
    `0.9%`
    B
    `2.4%`
    C
    `3.1%`
    D
    `4.2%`

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