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 o /kig cq.eii05ofd g46f the same quantojsul x bytl2i7-3(:sf/z au(ity which of the following can be reduceo2xlbl z/(y a:jusufs3i-t(7 d?
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 te n-arj: )lwp63jx w/jjchnique. Averaging repeated measurements will not change a systematic bias. So B & C are incorrect. Zero errors are examples of systematic errorsw:/3-njprx6 lj j)waj , 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