The absolute uncertainty in a reading from a metre rule with mm divisions is usually taken as:

  1. pm 0.01 mm
  2. pm 1 mm (or ±0.5 mm per end judged)
  3. pm 1 cm
  4. pm 1 m
Answer

B) pm 1 mm (or ±0.5 mm per end judged)

Related to the smallest division. SLO P-11-N-12 · Application

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise