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 quantity whicj5ls:vj49 iz kzns 5;ch of the following can6y l;pfg +rv )aja8) ggft,t4i be reduced?ryf4 t6t;va8 g)+gjgl, apif)
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 consi-j d 66buzxmvmm4 h2aqqa .2.nstently bad technique. Averaging repeated measurements will not change a systematic bias. So B & C a.q jmvu -4mxq 2mad.2n66abz hre 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.
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Post time 2024-8-21 21:38:19