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 measurm q5xzjty9 t;:ln*7+w uu3zlrements of the same quantit+:pqxsi 3ln t+ ok3- n1i**d2unsijvuy which of the following can inodn+l- v*i21ix jk+su:usnt p*3 q 3be 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 instrumentation or consistently badtpqbu+ ( bx u yyf0e9/je187fr 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 instrumeyf u +f u/tbb0r(pj18e9yex7 qnt 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.