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

[单选题]
By averaging three measurem-8,;hipo,3bcpjh nk qents of the same quantity which of the followingmp,yfaf8 4u-vc t2-va can be reducemu4av f-y-c8t2va ,pf d?

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 consistentl). zm) (2hg ykrxsi6wky bad technique. Averaging repeated measurements will not change a systematic bias. So B & C are incorrect. Zero errors are examples of syst wk)i)xmk6r h2y .(zgsematic errors, where 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.