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

[单选题]
The variation of quantity P as quantity vm-;idfp6n lo125l kc.dvuo( Q varies ir r8rc47ice9x s plotted. Theory states that P should vary linearly7 9ci4x8errr c 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 the origin.mbz4n r+7zqe vq:+k,a In physics many do not. But the scatter of the points suggests there are significant random errors.eza7 v+mz b: q,+nq4rk 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.