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WJEC A‑Level Physics questions by topic

Every question from every WJEC A-Level Physics paper, 2016–2025, part by part. Filter by topic, paper or year, open the mark scheme under any question, and download a set as a PDF.

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Year 1 · AS

Year 2 · A‑Level only

Calculations

1,173 questions

  1. Q1(a)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 1(a): The first law of thermodynamics may be expressed as: ΔU = Q − W State what is represented by: [3] ΔU Q W

  2. Q1(b)(i)

    Summer 2025 · Unit 3

    4 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 1(b)(i): Sinead claims that the expansion AB takes place at a constant temperature of approximately 500 K. Evaluate this claim. [4]

  3. Q1(b)(ii)

    Summer 2025 · Unit 3

    2 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 1(b)(ii): Determine the approximate amount of work done in the expansion AB. [2]

  4. Q1(b)(iii)

    Summer 2025 · Unit 3

    4 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 1(b)(iii): Hence or otherwise, calculate the net heat flow over the whole cycle ABCA. [4]

  5. Q2(a)(i)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 2(a)(i): Show that the balloon contains approximately 6 mol of helium. [3]

  6. Q2(a)(ii)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 2(a)(ii): Calculate the rms speed of the helium molecules in the balloon. [3]

  7. Q2(a)(iii)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 2(a)(iii): A sample of five helium molecules have speeds 950, 1200, 1325, 1500 and 1625 m s–1. Explain whether the rms speed of this sample is consistent with your answer

  8. Q2(b)(i)

    Summer 2025 · Unit 3

    1 mark
    The whole paper ↗
    Summer 2025 Unit 3, question 2(b)(i): Explain what is meant by ‘heat’. [1]

  9. Q2(b)(ii)

    Summer 2025 · Unit 3

    2 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 2(b)(ii): Explain why the rate of flow of heat through the walls of the balloon eventually approaches zero. [2]

  10. Q2(b)(iii)

    Summer 2025 · Unit 3

    4 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 2(b)(iii): At an altitude of 10 km, the pressure in the balloon reaches 28 kPa whilst the surrounding atmosphere is at a pressure of 25 kPa. Natalie states, ‘The rms speed

  11. Q3(a)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 3(a): Elliot states that the nucleus that emits a β– as it decays is nucleus X. Meg states that the nucleus that emits a β– as it decays is nucleus Y. Determine who i

  12. Q3(b)

    Summer 2025 · Unit 3

    1 mark
    The whole paper ↗
    Summer 2025 Unit 3, question 3(b): Define the half-life, T1 , of a radioactive substance. [1] 2

  13. Q3(c)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 3(c): Starting with the equation: A = A0e–λt Show, in clear steps, that: = ln 2 T1 λ [3] 2

  14. Q3(d)

    Summer 2025 · Unit 3

    4 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 3(d): The activity of a radioactive nuclide drops to 82% of its initial value in 730 years. Calculate its half-life. [4]

  15. Q3(e)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 3(e): Ella carried out an experiment to model radioactive decay. She used a large number of identical 6-sided dice. All dice had 2 sides painted black. She rolled the

  16. Q4(a)

    Summer 2025 · Unit 3

    1 mark
    The whole paper ↗
    Summer 2025 Unit 3, question 4(a): Circle the region of the most stable nuclide. [1]

  17. Q4(b)

    Summer 2025 · Unit 3

    1 mark
    The whole paper ↗
    Summer 2025 Unit 3, question 4(b): [1]

  18. Q4(c)

    Summer 2025 · Unit 3

    6 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 4(c): Use the graph to explain why energy is released during nuclear fusion and nuclear fission. [6 QER]

  19. Q4(d)

    Summer 2025 · Unit 3

    4 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 4(d): 1H) may be used in future nuclear fusion power stations. 2 3 4 1 1H 1H 2He 0n + + Calculate the energy released in this nuclear fusion reaction. Give your answe

  20. Q4(e)

    Summer 2025 · Unit 3

    3 marks
    The whole paper ↗
    Summer 2025 Unit 3, question 4(e): The UK government is investing £220 million to fund the first phase of the UK’s first prototype nuclear fusion energy power station. Discuss whether this is a g

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