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 measuremenju ;cjv-zi1- b8w4.pwpk9vx its iwn7dk wtb; su2-jd7)of the same quantity which of the following can be reducetu)77wknis2j; -d d bwd?

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 consistently bad kn6wscea82v (j -u,cq6vvrti hsvjh-,l :65 ntechnique. Averaging repeated measurements will not change a systematic bias. So B & 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 havir -,h6q hc6(,n vj 5cj6-s:ketvva 2vnsluw8 e the effect of reducing the random error. Hence A is correct.