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

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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 quan4gaa /h0i 0bcctity which of the fowq gbpp,-0rkpy(q-2 t )(ziabllowing can be re-bz p k(tqprg),bpyi aq-w02(duced?

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 consisteny, a 2c98zu*x qh3eokvff.fi)tly 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 hig) 2fca3e*vo8hffxu. qk9iy z,h and at other times too low – so averaging them will have the effect of reducing the random error. Hence A is correct.