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

[单选题]
The variation of quantit 8 o0p 4se+5ay *lxe0gb95asxhtm;k aoy P as quantity Q varies is plot- envfm-5 z(;j b:ggntted. Theory states that P shouen; -v-tj5nm bfg:( zgld 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 the origix5f8skk zm. v7n. 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 theoretical reason to believezx 87 k.5msvfk that the line must go through the origin.