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 measuh-q 8tl1shht, rements oo9x4lgim uy )i2l6x)cf the same quantity which of the following can be reducedl6 ic uogl)y 9x)m4ix2?
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 consistejj4c a,zx7 +pn lj:wc9:*jqbk ntly bad technique. Averaging repeated measurements will not change a systematic bias. So B & C are incorrect. Zero errors are exa+c4 ,xbljnpjaw 9c::jq*kj7zmples 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