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 the samr9pdqc2 o py h)7d-:mlji01 vne quantity which of the-q).iz omu . nkhc)azba6 pfh 5gxs(*3 following can be reaz3x ) fna.s qb*h-.mk6)p g5h icu(zoduced?
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 consis r ;gq*4tnaq5xtently bad technique. Averaging repeated measurements will not change a systematic bias. So B & C are incorrect. Zero errorsntrqa 5 x*q4;g 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.
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Post time 2024-8-21 21:38:19