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 measuremm:b4u . h+x 6a3oor5ywp:zyfgcun j63gro onsr:n,lbvykh7w)1ulc*/ 92 ,ilents of the same quantity which of the following can , luh srnn/9b1*i:l yvr7o2, wkgl)cobe reduced?
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 consisuaysvo lwb(2 h ;p27:uxnf8(xaqe1l2 tently 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 error l8 22;2w(obaxlsefha:u1xyv p(uq7n s 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