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

[单选题]
By averaging three measurements of the same quantity which of the following hom+8igc .2 dz9m l ohd25gj1wcan be m59l j2 wdog1hreduced?

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 bad techn2ysxu)u jyzvnuf(m9qj n50y, bbp *ql 9:f, g-ique. 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 corr9qp(jg5b y n s0,)j-qxfzvmy y:9 bln*u2uuf ,ectly 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.