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 measuremc hu/2n*dg;;)wd g dvuents of the same quantity which of the followinggmy4cccu(qkv()j .76gx,*i q k u agl1 can *ygxc a g,)ju7 k qug.kmc1((qlcv46ibe reduced?
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 instrumentad t)a3c :jvmz0bh u/e qc:tyms70.8kition 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 ztv j8) :cy:7cm0.h0ia3 dm/qukbt s einstrument 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