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 sam)pw.zf*gvrr. m,o/ rg /wdcph*(u:li e i62ew e quantity :j/m( syaq; 3iuewkz3 which of the following can bemz/yw3(aq3uij: se ;k reduced?

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 fa3afamo+l9w2- d9cd o 1*v i2yza*qpppulty instrumentation or consistently bad technique. Averaging repeated measurements will not chan *mdd9qz2ypal2 v3p a* a+oo1ic-w f9pge 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 have the effect of reducing the random error. Hence A is correct.