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 measuremec fgkir; ip++ 7.6bfe1 y0vhuunts of the same quantity which of the following geii4vwx hhd+;+4mf w68fsn *y,e /xo can be reduc 4 *fsidv;x x6+4/8 +wfmoeh, henyiwged?

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 co8lo s/dmai jr(3t8.utnsistently 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 (rt j l.ast8uo8 dm3i/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.