A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2019 · Q61 Mark

Two quantities p and q are directly proportional to each other. Experimental results are taken and plotted in a graph of q against p. Which graph shows there were random errors in the measurements of p and q?

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A[Graph A shows points close to a straight line passing through the origin]

B[Graph B shows points close to a curve]

C[Graph C shows points scattered around a straight line passing through the origin]

D[Graph D shows points scattered around a straight line not passing through the origin]

✓ Correct answer

C: [Graph C shows points scattered around a straight line passing through the origin]

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2019 Paper 1 Variant 2, question 6.

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