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

[单选题]
By averaging three mvw44ol 6.dbk beasurements of the samesqzac,;8sq ()jn v;g m quantity which of the following can be red qg(ac;z8jsnsq,;v)m uced?

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 consistently ba( . 9buiplh0sod technique. Averaging repeated measurements will not change a systematic bias. So B & C are incorrect. Z.ip uo9(sb0lh ero 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 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.