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

[单选题]
The variation of quantity P a5cl-/dmu i5tms quantity Q varies is pl0.+ g4 o-vzrp9ql mcxnotted. Theory states that P should vary linearloxrp4v .9 q+0 mlzncg-y 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 all9g0lcz*e 8vc0ly y6 ui graphs must go through the origin. In physics many do not. B0l 9v g0zyu6ic*l 8eycut 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 believe that the line must go through the origin.