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 qb93(+ rvpqdqbh.6ipx uantity which of the following t-; +skt8xg endo:x n6can be reduot;s -gnntx: 6+8edkx ced?

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 judoarh 7-z 0k* y7pejb)3zk7to faulty instrumentation or consistently 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 erroarjyb 3o j k)7z7ep kzh0d-u7*rs 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.