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 mea;yrmx(*qab h 7r)/jc: j1+qplpnm xvr . ihd,9surements of the u7 w9*8co t bpo9le+ 4etll0pksame quantity which of the following can be r +tk4bo 9lt*78l9opu0wle c peeduced?

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 instruwjbtj5:5gh x 2+k y4ipmentation 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 instrument is not correctly calibrated. So D is incorrect. Random errors will be sometimes too higp5jjxh2 4:+i b wgkty5h and at other times too low – so averaging them will have the effect of reducing the random error. Hence A is correct.