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 which of themu ewal*m. q/hv8b v6ym df16. following eqj.mmi wj)oewmye5, ; g3.s (can be rjg.m ;y, 5 ee ije3(w.wmsmqo)educed?
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 instrumentation9i83g( qxsqls or consistently 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 incois 9sqqx3g8 l(rrect. 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