Why must uncertainty be considered when testing whether a quantity is constant?

  1. constants have no uncertainty
  2. experimental values will never be exactly equal, so we check if differences are within uncertainty
  3. it isn't needed
  4. uncertainty makes values equal
Answer

B) experimental values will never be exactly equal, so we check if differences are within uncertainty

Judging agreement. SLO P-11-N-23 · Understanding

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