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← Course overviewMODULE 1.3 ASSESSMENT

Errors and uncertainties

CIE-style objective and structured questions assess errors, calibration, accuracy, uncertainty calculations and experimental presentation.

Objective question 1

Which statement about systematic error is correct?

Objective question 2

A micrometer has a +0.03 mm zero error. The observed diameter is 4.82 mm. What is the corrected diameter?

Objective question 3

A set of closely grouped readings far from the accepted value is:

Objective question 4

For z = x/y, how are percentage uncertainties combined?

Objective question 5

Which result is reported consistently?

Structured question 1

A voltage is measured as (6.40 ± 0.08) V. Calculate its percentage uncertainty.

Structured question 2

The sides of a rectangle are (12.0 ± 0.1) cm and (5.0 ± 0.1) cm. Calculate the percentage uncertainty in its area.

Structured question 3

A best-fit gradient is 3.60. The steepest and shallowest acceptable gradients are 3.82 and 3.45. State the absolute uncertainty.