JEE MainPhysicsUnits and MeasurementsMCQ+4 / −1
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 0.5mm is noticed on the pitch scale. The nature of zero error involved and the least count of the screw gauge, are respectively :
- APositive, 0.1 mm
- BPositive, 0.1 m
- CPositive, 10 m
- DNegative, 2 m
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