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

[单选题]
The variation of quantity Po eh0a5guw;/mxl,0 sn as quantity Q vx*b )7w6dczaqoj4 ;b+ sh zx;fxt47yoaries is plotted. Theory states that P should vary linearly with; 6yqtaxz77c+z dbsj fo;hwo4*x ) bx4 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 mus ,rnw+z 7+tz izy yh6kqffa275t go through the origin. In physics many do not. But the scatter of the points 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 the6h w7arq nf+z +ytzki5 2zf,y7oretical reason to believe that the line must go through the origin.