Kognity IB Physics A.0 Measurements & Uncertainty (id: d9eac2f7a)

admin

本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics

[单选题]
The variation of quantity P as quantity Q varies is plotted. Theorygaf/d d t u2-j.(a+xhj sq4 qbcqj ma5 81gqt (ifluw0**kl,fp-tates that P should vary linearly with Q.f qu8 gq1*a4m,l jk(tf0 qpblw5* i-qc

A. The systematic errors are substantial.
B. The random errors are substantial.
C. The random errors and the systematic errors are insignificant.
D. The random errors and the systematic errors are substantial.


参考答案:  B


本题详细解析:
It is a mistake to believe that all graphs must go through thwy0mw-9 vh5sxe origin. In physics many do not. But the scatter of the points suggests 05my9-h xswvwthere are significant random errors. The fact that the line of best fit does not go through the origin can only be taken of evidence of a systematic error only if there is good theoretical reason to believe that the line must go through the origin.