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

[单选题]
The variation of quantixbcg5cn1y/ck h pv.szz86 *k .l2s6 kfty Pee ehjt53wtv ) 0*re*s as quantity Q varies is plotted. Theory states that P shore3t**we js5eh vet )0uld vary 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 all graphs mustthhjy-k9as0 ew p01rmq;*k , j 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 qsk0 0th jyhe 9w;, kprj*m-a1through 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.