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

[单选题]
The variation of quantity P as quans7,7f;p qqde 2w r3 hgiaka1)ftity Q varies is plott xye*j6gk1ba-cz(wgz* p++bi ed. Theory states that P should vaa+jczb+-gz w16 i k( **yepxgbry 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+ph3,* ff kgzt 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 lihktp, fg3+ *fzne 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.