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JEE MAIN 2020
06.09.20_S1
Question
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.
Select the correct option:
A
Positive, 0.1 mm
B
Positive, $10 \mu \mathrm{~m}$
C
Negative, $2 \mu \mathrm{~m} \mid$
D
Positive, $0.1 \mu \mathrm{~m}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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Physics
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