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 measaoi/ 0ux06ulbu obkts(d-6 +h9xk+vq u- yf5avy13 hcjrements of the same quantity which of the following can be reduc+h q -ft ax b319u-o(6yhk sd+vkjcvy5ed?

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 conccovf d y.8v/:sistently 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 is not correctly calibrated. So D is incorrect. Random errors will be sometimes too high and at other times too low – so averag./ycv ov:8dcf ing them will have the effect of reducing the random error. Hence A is correct.