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

[单选题]
The variation of quanti69 0e9:e8hafvgj ohyzty P as quwyw 9aq190 dsdantity Q varies is plotted. Theory states that P should vary linearld1 s0a ww9y9dqy 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 origin. Imfhyien c7ufzdh 0)1-5c , b(xn 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 bedfx 7 fcb)e 05y,m cuh-(nh1izlieve that the line must go through the origin.