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 on3ahg +de*oq b4d k-+tf the same quantity which of th lo y9-*nier q*l+hcw7e following can be reduced?9rl*c+yn- ewq i* 7ohl

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 consistentl q2z qv6r-qmur fg0d*,y 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 somet2qr0u-q* d,6vfqmg r zimes too high and at other times too low – so averaging them will have the effect of reducing the random error. Hence A is correct.