Particle physics in Unit 4 — Physics IAL Past Papers
20 papers, 2017–2025 · Unit 4
The Physics IAL Unit 4 — Further Mechanics, Fields and Particles past papers in the collection that assess particle physics.
These papers were read question by question, and each question tagged with what it assesses, so the questions on this topic are listed with each paper. Blind checks of 160 randomly chosen question parts, 80 from Unit 4 and 80 from the other five units, by readers who had not seen the tags, found 155 tagged with the right topic (95% confidence interval 92.9–98.7%). Second readers re-read 33 of the 128 papers independently and found 20 tags, of 1,173, that the first reading had missed. On the practical papers, Units 3 and 6, every mark spent on an experiment counts towards that experiment’s topic.
Papers
Unit 4 · June 2025 · Q4 · 1 mark, Q6 · 1 mark, Q7 · 1 mark, Q8 · 1 mark, Q14 (a(i), a(ii), b, c) · 9 marks, Q16 (a, b(ii)) · 9 marks · needs (b(i)) — question paper and mark scheme
Unit 4 · January 2025 · Q2 · 1 mark, Q4 · 1 mark, Q7 · 1 mark, Q8 · 1 mark, Q11 · 3 marks, Q14 (a) · 2 marks, Q17 (a, b, c) · 11 marks — question paper and mark scheme
Unit 4 · October 2024 · Q1 · 1 mark, Q3 · 1 mark, Q8 · 1 mark, Q10 · 1 mark, Q11 · 3 marks, Q13 (b) · 3 marks · needs (a), Q16 (b(i), b(ii)) · 6 marks, Q18 (a, b(i), b(ii), b(iii), b(iv)) · 17 marks — question paper and mark scheme
Unit 4 · June 2024 · Q2 · 1 mark, Q5 · 1 mark, Q9 · 1 mark, Q10 · 1 mark, Q11 (b) · 2 marks, Q14 (a, b(i), b(ii), b(iii)) · 11 marks, Q16 (a, b, c) · 12 marks — question paper and mark scheme
Unit 4 · January 2024 · Q2 · 1 mark, Q4 · 1 mark, Q6 · 1 mark, Q12 · 3 marks, Q19 (b) · 5 marks, Q22 (a(i), a(ii), b(i), b(ii)) · 13 marks — question paper and mark scheme
Unit 4 · October 2023 · Q3 · 1 mark, Q6 · 1 mark, Q7 · 1 mark, Q15 (a) · 4 marks, Q21 (a, b, c, d) · 10 marks — question paper and mark scheme
Unit 4 · June 2023 · Q1 · 1 mark, Q5 · 1 mark, Q6 · 1 mark, Q7 · 1 mark, Q9 · 1 mark, Q11 · 5 marks, Q12 (a, b) · 6 marks, Q13 (a, b) · 6 marks — question paper and mark scheme
Unit 4 · January 2023 · Q1 · 1 mark, Q4 · 1 mark, Q7 · 1 mark, Q11 (a, b) · 4 marks, Q17 (a(iii)) · 3 marks, Q18 (a(i), a(ii), b(i), b(ii), b(iii), c) · 16 marks — question paper and mark scheme
Unit 4 · October 2022 · Q1 · 1 mark, Q3 · 1 mark, Q7 · 1 mark, Q8 · 1 mark, Q11 (a, b, c) · 6 marks, Q13 (a, b, c) · 9 marks, Q18 (c) · 3 marks — question paper and mark scheme
Unit 4 · June 2022 · Q1 · 1 mark, Q2 · 1 mark, Q6 · 1 mark, Q7 · 1 mark, Q8 · 1 mark, Q13 (a, b) · 9 marks, Q14 (a, b, c, d) · 11 marks, Q16 (b(i)) · 4 marks — question paper and mark scheme
Unit 4 · January 2022 · Q2 · 1 mark, Q5 · 1 mark, Q9 · 1 mark, Q16 (a, b(i), b(ii), b(iii), c) · 14 marks, Q17 (a, b, c, d(i), d(ii), d(iii)) · 14 marks — question paper and mark scheme
Unit 4 · October 2021 · Q1 · 1 mark, Q8 · 1 mark, Q9 · 1 mark, Q16 (c) · 3 marks, Q17 (a, b(i), b(ii), c) · 14 marks, Q18 (a, b, d, e(i), e(ii)) · 14 marks — question paper and mark scheme
Unit 4 · June 2021 · Q1 · 1 mark, Q3 · 1 mark, Q4 · 1 mark, Q10 · 1 mark, Q18 (a, b, c(i), c(ii), d) · 16 marks — question paper and mark scheme
Unit 4 · January 2021 · Q4 · 1 mark, Q6 · 1 mark, Q13 (a, b) · 8 marks, Q14 (a, b) · 7 marks, Q15 (a, b) · 10 marks — question paper and mark scheme
Unit 4 · October 2020 · Q2 · 1 mark, Q12 (a, b) · 5 marks, Q13 · 4 marks, Q14 (c) · 3 marks, Q17 (a, b(ii), b(iii), c) · 12 marks, Q18 (a, b(i), b(ii), d) · 11 marks — question paper and mark scheme
Unit 4 · January 2020 · Q1 · 1 mark, Q6 · 1 mark, Q10 · 1 mark, Q12 · 6 marks, Q19 (a(i), a(ii), b, c) · 15 marks — question paper and mark scheme
Unit 4 · October 2018 · Q1 · 1 mark, Q8 · 1 mark, Q9 · 1 mark, Q10 · 1 mark, Q11 (a, b) · 4 marks, Q13 (a, b) · 7 marks, Q16 (a) · 2 marks, Q17 (a(i), a(ii), b, c(ii)) · 12 marks — question paper and mark scheme
Unit 4 · June 2018 · Q4 · 1 mark, Q6 · 1 mark, Q7 · 1 mark, Q12 (b(i)) · 4 marks, Q13 (a, b, c) · 8 marks, Q15 (a(i), a(ii), b) · 9 marks — question paper and mark scheme
Unit 4 · January 2018 · Q2 · 1 mark, Q4 · 1 mark, Q6 · 1 mark, Q11 (a, b) · 4 marks, Q14 (a, b, c) · 7 marks, Q16 (a, b(i), b(ii)) · 10 marks — question paper and mark scheme
Unit 4 · June 2017 · Q1 · 1 mark, Q5 · 1 mark, Q7 · 1 mark, Q9 · 1 mark, Q16 (b, c) · 6 marks, Q17 (c) · 2 marks — question paper and mark scheme