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

[单选题]
The variation of quantity P as ( (mwcg;ec ;n.(9 zk9wa niwhwquantity Q )(z wm1u9ybllvaries is plotted. Theory states that P should vary linearly with Q.m(y)l9 bzu 1lw

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 c/mrcc31 qoo5that 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 go through the origin can only be taken of evidence of a systematic error only if there is good theoretical reason to beliem o/ccroc513 qve that the line must go through the origin.