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 measurements of the same qujj.k;d yl)2 t(poc 3rlantity which of the following c):rbi24e3 gnq;ntpx xan ,0ee an be reducedxn3ntrea:,eixgp ne b 0 4q)2;?

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 g0hj:,j3 z7:qdcwkx1 rfqf6 q bad technique. 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 ish63q j,gq1c:wfjxz d7rfk q:0 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.