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JEE Main Physics Class 11 Physical world and Measurements Part 1 Questions

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Question : 30

Total: 100

A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of 0.5 mm is noticed on the pitch scale. The nature of zero error involved, and the least count of the screw gauge, are respectively :

[Sep. 06, 2020 (I)]

Negative, 2 mm
Positive, 10 mm
Positive, 0.1 mm
Positive, 0.1 mm

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