Kognity IB Physics A.0 Measurements & Uncertainty (id: 92f2eca62)

admin

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 quanti:veqxx 1pei f1j56mo+ ty which of 8m plq+uox7u. , fyo ei-uqs4hx7*yt:the following can be retf4u:hm 8il7 sq yu*pqy+o,-x eu.o7xduced?

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 yeck43 lp wwj6 cb.f69bad technique. Averaging repeated measurements will not change a systematic bias. So B & C are incorrect. Zero errors are examples of systematic errp46k3 lewc9c6 bwfy .jors, 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.