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

[单选题]
The variation of quantity P vtv 29amvis8 5as quantity Qrnf5g6od ass/y *y; y0t93irw varies is plotted. Theory states that P sd/90wsy 5y3 ofsyn t6grir*a;hould 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 teqsd tp073kv r,ag9(v9 px8 yohrough 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 raeq7py 9, v3p( dtv8oxk 9sg0evidence of a systematic error only if there is good theoretical reason to believe that the line must go through the origin.