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 7*fd utn,xjvz9+ kkv7 of tr)/ljakq e.cfr e(m.: he same quantity which of the following can be rm(/ a.f.j:qrr)elce keduced?
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 arisehjrz bv;l0.4:wlb c ,h due to faulty instrumentation 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 incorrect. Random errors will be sometimes too high and at other times too low r0j.hwlbc4;z b:l,hv– 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