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

[单选题]
The variation of quantit quxm624 0rnzxevd// my P as quantity flfuw 5hnbz:cd 7d9 79Q varies is plotted. Theory states that P should vary l5 zwuhdn b9lff:c9d77inearly 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 origi:vwcb8(b 79ayjyeq )yn. 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 ryq:w87bce ajbyvy( 9)eason to believe that the line must go through the origin.