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

[单选题]
The variation of quantity P as quantit 5 ;hyss,k4hkgs: wb;wy Q varies is plottedaz;wzp3hag 0v2e8t) rw*m5 bq. Theory states that P should vary linearly withg2vazt;h*z q583 ab mr)ewwp0 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 grap et-u u8q-pgc5hs must go through the origin. In physics many do not. But the scatter of the points suggutu-8q-ce gp5 ests 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.