CourseCourseConceptConceptDocumentDocument

CAIE A-Level Physics AS 1.3.2 The Distinction Between Precision and Accuracy Questions

Distinguish precision from accuracy by interpreting repeated measurements, spread and closeness to an accepted value in Cambridge A Level Physics data.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Distinguish precision from accuracy by interpreting repeated measurements, spread and closeness to an accepted value in physics data.

CAIE A-Level Physics AS 1.3.2 The Distinction Between Precision and Accuracy Questions question 1

[Maximum number: 1]

A desk has a true width of 50.0 cm .
Two students, X and Y, measure the width of the desk.
Student X uses a tape measure and records a width of (49.5±0.5)cm(49.5 \pm 0.5) \mathrm{cm}.
Student Y uses a metre rule and records a width of (51.4±0.1)cm(51.4 \pm 0.1) \mathrm{cm}.
Which statement about the measurement of student X is correct?

A

It is less accurate and less precise than the measurement of student Y .

B

It is less accurate but more precise than the measurement of student Y .

C

It is more accurate and more precise than the measurement of student Y .

D

It is more accurate but less precise than the measurement of student Y .

All question bank results loaded