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

[单选题]
The variation of quane.p+f o q48tnj.h:fln a-i 9aeti.v f hed7*s(wity P as quantity Q varies is plotted. Theory states that P shofs7 h v(i*w.eduld vary linearly with Q.

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 t3rf9);keoc2 5bt snle2sx.nihe origin. In physics many do not. But the scatter of the poi 9;.n2r)3tfsbeose 2k5x cnlints suggests there 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.