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 of 9,g dat gik lw(vma*;)7pf r:nv .gs5 nvu.ej)the same quantity which of the following can be reduced?5.pgv)v. ruf 7en: jns

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 f; b :j92b;scplli ff4vaulty 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 errors will be sometimifj9bs: ;4 b clf2;plves too high and at other times too low – so averaging them will have the effect of reducing the random error. Hence A is correct.