NEET Physics Errors in Measurements Significant Figures Online Test Set B

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Question 1

Question

Which of the following is most accurate?

Answer

A screw gauge having pitch 1 mm and 50 divisions on circular scale

A screw gauge of least count 0.001 mm

A vernier callipers of least count 0.01 mm

Vernier callipers having 20 divisions on the sliding scale (vernier scale) coinciding 19 divisions on the main millimetre scale