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

admin

本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics

[单选题]
The variation of quantr a0mn2,wuo 4nity P as quantityf oih -)fb74wx Q varies is plotted. Theory states that P should vary li)7f-ixbw f ho4nearly 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. In pi8 g1970yxth .p gjbaxhysics many do not. But the scatter of thpx9.i7 8y0t gbh1xa gje 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 believe that the line must go through the origin.