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QJEEM20Phd343: JEE Main 2020 Physics - Class 11 JEEM20Phd343 Solution: A screw gauge has 50 divisions on its circular scale. The…
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 :
Multiple Choice Options
- A Positive, 0.1 mm
- B Positive, 0.1 m
- C Positive, 10 m
- D Negative, 2 m
Step-by-Step Verified Solution
Least count of screw gauge
=
= 1 10-5 m
= 10 m
Zero error in positive.
=
= 1 10-5 m
= 10 m
Zero error in positive.