Kognity IB Physics A.0 Measurements & Uncertainty (id: 92f2eca62)

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本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics

[单选题]
By averaging three mka4/au/yys5 mexo-f 5eau9g t:dbjw6o e.jzj 4y,i9o9isurements of the same quantity which of the following can be redu:yo jje964i ,z. b9 uwjtoig9dced?

A. Random errors
B. Systematic errors
C. Random & systematic errors
D. Zero errors


参考答案:  A


本题详细解析:
Systematic errors arise due to faulty instrumentation or consi1 c1 d.atain4ustently bad technique. Averaging repeated measurements will not change a systematic bias. So B 4u.da1n1it ca& C are incorrect. Zero errors are examples of systematic errors, where a the zero of an instrument is not correctly calibrated. So D is incorrect. Random errors will be sometimes too high and at other times too low – so averaging them will have the effect of reducing the random error. Hence A is correct.