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

[单选题]
By averaging three measurements of the samet, 2hi t)a)iyswx8-(s h6bsco dhg7x nkl2/ozf2 y:3wbnp j34 quantity which of the following can bf3njoy 34n:g/lp7h 22zkbx wde 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 instrumentayjz8n8fh sk5ld:;/fgtion 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 errgfzdnjyls8: kf8 / h;5ors 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.