Physics
Standard level
Paper 1A
17 Oct 2025
Zone A afternoon Zone B morning Zone C afternoon
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Candidate session number
1 hour 30 minutes [Paper 1A and Paper 1B]
Instructions to candidates
●​ Do not open this examination paper until instructed to do so.
●​ Answer all questions.
●​ For each question, choose the answer you consider to be the best and indicate your choice on
the answer sheet provided.
●​ A calculator is required for this paper.
●​ A clean copy of the physics data booklet is required for this paper.
●​ The maximum mark for paper 1A is [25 marks].
●​ The maximum mark for paper 1A and paper 1B is [45 marks].
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​ Q1.
A student models the relationship between velocity v of a moving charge in a magnetic field, ​
and the force F acting on it as F=kv, with k being a constant
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What are the units for k expressed in fundamental SI units?
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Q2.
A student throws a ball with an initial velocity in the horizontal direction. Air resistance is ​
negligible. At t=2.0 s, the ball has travelled a distance x in the horizontal direction and a ​
distance y in the vertical direction.
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What are the horizontal and vertical distances covered at t=1.0 s, in terms of x and y?
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Q5.
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Q7.
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Q9.
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Q14.
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Q15.
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Q17.
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​ Q18.
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Q19.
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Q21.
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Q22.
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Q23.
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Q24.
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Q25.​
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