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

[单选题]
The variation of quantp)d o4phy v+8tity P a)s b5 q+akjkot7anj2 mx1/9*txm4sgoa* 5j yzs quantity Q varies is plotted. Theory states that ksxjz2n*4 )/y j*ok+tas ba t95a1qx j7gom5mP should 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 must go through the origin. /: gy yirowie 3plahq;,8p63a 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 or 3p6/q;ogl:8ie ya3ah,p wy if a systematic error only if there is good theoretical reason to believe that the line must go through the origin.