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

[单选题]
The variation of quantity P as quantity Q v)g(3ho nz mzj0aries is plotted. T12 o,sc 52g bxfkl8bzoc. bj1eheory states that P c o2oxfsgkb8j1z2lb5 .bc e1 ,should 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 believbl,gegwk1o6 /e that all graphs must 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 1kwg,b6 /goe lgo 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.