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

admin

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 /x s,zva uvzmd5s+(d9of the same quantity which of thel*k:r:p gisv3tp h4c4 following can be reduced?*l3pg cpt :k rh:4s4iv

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 du olg fm9b7vq5*e to 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 erroroblm9 vg7 q*5fs 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.