Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

(a)[2]

Describe, separately in each case, what systematic errors and random errors do to readings when a micrometer screw gauge is used to measure the diameter of a wire.

(b)[2]

Distinguish between precision and accuracy when measuring the diameter of a wire.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Systematic: the measured value is always greater than or always less than the true value by the same constant amount” …

Full mark scheme, point by point
Step-by-step worked solution
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