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

[单选题]
The variation of quantimh.cu/k (iucay)z ea/ j9/ry4 ty P g3nf5m, kide) as quantity Q varies is plotted. Theory states that if ndk)3m ge,5P 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 mustcp,d +m6zr+xlgbb1n7 go through the origin. In physics man+,d1+ mrgnblz bxc67 py 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 believe that the line must go through the origin.