Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
If the screw on a screw-gauge is given six rotations, it moves by 3mm on the main scale. If there are 50 divisions on the circular scale the least count of the screw gauge is:
PhysicsExperimental PhysicsJEE MainJEE Main 2020 (09 Jan Shift 1)
Options:
  • A 0.001cm
  • B 0.02m
  • C 0.01cm
  • D 0.001mm
Solution:
2618 Upvotes Verified Answer
The correct answer is: 0.001cm

Pitch =36=0.5 mm
L.C. =0.550 mm=1100 mm=0.1 mm=0.001 cm

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.