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 measuv+ (qy- ttcb;orements of the same quantity w8jmsq*xi z5j 1+zp**goc8zw which of the following can be rz wj1*x8z+posi5zc8mwg*j* qeduced?
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 instrumentatbi:3lax).z0/si +w i q m+v agq:y0uzkion 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 some:ag+qkaviuqmilz :. x 0 /)+sybzw30itimes 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