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Error and Uncertainty

10. In serew ...

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10. In serew gauge. the distance moved by screw on the linear scale is 10 mm in 10 complete rotation. There are 50 divisions onthe eircular scale. When nothing is put in between the studs, 45th division of the circular scale coincides with the referendeline. While measuring the thickness of glass plate, the main scale reads four divisions and circular scale reads 30 divisionsFind the thickness of the plate.(a) 9 mm(d) 4.6 mm(c) 11 mm(b) 10 mm

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