Writing a result as (9.81 pm 0.05) m s^-2 means:

  1. the true value probably lies between 9.76 and 9.86 m s^-2
  2. the value is exactly 9.81
  3. the value is between 9.81 and 9.86 only
  4. the error is 5%
Answer

A) the true value probably lies between 9.76 and 9.86 m s^-2

The range is value pm uncertainty. SLO P-11-A-07 · Understanding

Physics MCQ · More Physical Quantities and Measurement MCQs · Practise