CourseCourseConceptConceptDocumentDocument

CAIE A-Level Physics AS P3.2 Quality of Data Questions

Practise identifying how repeated measurements and averaging reduce random error in practical investigations, using mark-scheme-supported methods.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Reduce random error by taking several readings and calculating an average.

CAIE A-Level Physics AS P3.2 Quality of Data Questions question 1

[Maximum number: 2]

One end of a wire is connected to a fixed point. A load is attached to the other end so that the wire hangs vertically.

The diameter d of the wire and the load F are measured as

d=0.40±0.02 mm,F=25.0±0.5 N.\begin{aligned} & d=0.40 \pm 0.02 \mathrm{~mm}, \\ & F=25.0 \pm 0.5 \mathrm{~N} . \end{aligned}

For the measurement of the diameter of the wire, state

how random errors may be reduced when using the instrument in (i).

All question bank results loaded