CIE IAL · Physics · 9702 P1 · A Level

9702 P1 Errors and uncertainties Topic Questions

Every 9702 P1 Errors and uncertainties topic question from the 2025–2027 syllabus, drawn from 12 papers (2025–2026) and grouped by syllabus point. Each row opens a page listing the exact question numbers, marks and a direct link into the paper. These are questions by topic, not full papers, so you can revise one topic at a time.

9702 P1 3 subtopics 16 topic questions 12 papers 16 tagged marks

Back to Errors and uncertainties All paper codes

Core finding

3 assess the uncertainty in a derived quantity by simple addition of… is the most frequently assessed subtopic in Errors and uncertainties, with 10 topic questions and 10 marks across 10 papers. 2 understand the distinction between precision and accuracy follows with 5 topic questions and 5 marks. The topic contains 3 subtopics, 16 topic questions and 16 marks in total. Rows count only the parts tagged to that subtopic, keep the same colour in both charts and repeat paper count, tagged marks and year range in the native table.

Topic question count and mark distribution

Subtopics are on the vertical axis and sorted from highest to lowest. Only the parts whose knowledge graph matches a subtopic are counted for it, and percentages are each row's share of the tagged total in that chart. A part tagged to several subtopics is counted in each bar, so the bars are not a partition of the topic total.

Questions by subtopic

question items

3 assess the uncertainty in a derived quantity by simple addition of absolute or percentage uncertainties 10 papers

1058.8%

2 understand the distinction between precision and accuracy 5 papers

529.4%

1 understand and explain the effects of systematic errors (including zero errors) and random errors in measurements 2 papers

211.8%

Marks by subtopic

marks

3 assess the uncertainty in a derived quantity by simple addition of absolute or percentage uncertainties 10 papers

1058.8%

2 understand the distinction between precision and accuracy 5 papers

529.4%

1 understand and explain the effects of systematic errors (including zero errors) and random errors in measurements 2 papers

211.8%

Subtopic comparison matrix

Curriculum order is by syllabus number, then alphabetically. Every row links to the matching past-paper question list.

Subtopic	Topic questions	Papers	Marks	Years
1 understand and explain the effects of systematic errors (including zero errors) and random errors in measurements	2	2	2	2025–2026	Open topic questions
2 understand the distinction between precision and accuracy	5	5	5	2025–2026	Open topic questions
3 assess the uncertainty in a derived quantity by simple addition of absolute or percentage uncertainties	10	10	10	2025–2026	Open topic questions

Browse every topic question

1 understand and explain the effects of systematic errors (including zero errors) and random errors in measurements 2 question items · 2 papers 2 marks · 2025–2026 2 understand the distinction between precision and accuracy 5 question items · 5 papers 5 marks · 2025–2026 3 assess the uncertainty in a derived quantity by simple addition of absolute or percentage uncertainties 10 question items · 10 papers 10 marks · 2025–2026

Topic question rules and edge cases

How many subtopics does Errors and uncertainties contain?: This page lists 3 subtopics tagged to the current syllabus. They are ordered by syllabus number, then alphabetically, and each row opens a page of matching past-paper questions.
How are the subtopic question and mark totals calculated?: A multiple-choice question contributes one item and its marks to every subtopic it is tagged with. A structured question contributes one item per tagged part, and that part’s marks; untagged parts of the same question are not counted here. A part tagged to several subtopics therefore appears under each of them.
Why do some subtopics have no numbered prefix?: Practical-skills statements and some syllabus bullets are unnumbered. Numbered statements come first; unnumbered statements and ties are sorted alphabetically.
Is the LaTeX rendered without JavaScript?: Yes. Subtopics that contain formulas are converted to static KaTeX HTML during the build, and the KaTeX stylesheet is served from the same site.