Physical Quantities and Units
Definitions: Physical Quantities and Units
Exam question
Explain what is meant by the accuracy of a measured value.
9702/22 · Feb/Mar 2025 · Q1(a)
Model answer
How close a measured value is to the true value of the quantity.
Exam question
A set of experimental measurements is described as precise and not accurate. State what is meant by: (i) precise.
9702/21 · Oct/Nov 2022 · Q1(b)(i)
Model answer
The measurements have a small range.
Exam question
State what is meant by a vector quantity.
9702/22 · Oct/Nov 2024 · Q1(a)
Model answer
A quantity with both magnitude and direction.