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

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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 w01vwd3mh 9f 1 smklb9jfh: +msame quantity which of the following canistm 9ms g5kq6::3q wlieucx2+eeu8 4 be rm9g:etk8qswxsc25le4 e:mqiui+ 3u 6educed?

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 instrumentatisc4ab8scsf h9x4ch5kyw2 c +8on or consistently bad technique. Averaging 44k c 2xb+yhw8sf a5cs shc98crepeated 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 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.