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 same qu4cd nghs/l+ +u-ew9 qs w4w/hkantity which of the s(/w ley gsl :l0 wasf,qa;jquex ..7)following can be reduc /fs xa. 0awqs(llw,useg:jq e.;ly)7ed?

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 ziky *jg3y+q +(pu4li or consistently bad technique. Averaging repeated measurements will not change a systematic ul ikj+y3*4 gpiyz+q(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.