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

[单选题]
The variation of quan 6gj4g +bc9 *rhtu(he:g*ilgk tmlxoq 1h v:r3om ui:*5ity P as quantity Q varies is plotted. Theory states that P should vary linearly withu:m53:o1 *hvo rixlqm 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. In phz+vp:w j0p t(pzj* 9(uem; odcysics 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 theoretical reason to belp(jp0jv9wtc ep;*d m:(z+u z oieve that the line must go through the origin.