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 measu6p)l yt* q hunjnf34g7rements of the same qu324gpl:rjosc3-u otuv,j h 7lsvn+r 4antity which of the following can be reduced?g4 hl 3vr2s4soljn uj ro,c:v+3pu7t-

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 con+h8 s)-tpsv9nen tf ka(-hjp2; gpg1nsistently bad technique. Averaging repeated measurements will not change a systematic bias. So B & C are incorrect. Zero errors are examples of systematic errors, wp h-1+vpnf8 -kh pgtsg(ja 2t ;s)ne9nhere a the zero of an instrument is 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.