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

[单选题]
The variation of quantity 5y fi q:tm2p t8o-hzi2P as quantity Q varies is plotted. Theory stated: 9n+d fck1hhz-p, xxeyemtv4lg 1, .s that P should vary lineahl,k+cz1 14:nf,xy-txe dgv.mpde 9hrly 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 grapw ,l cx,y2itd-+ neoi(:i ;rcghs must go through 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 evidence of a systematic error only if there is good theoretical reas ,li-(x+ g:r ecy ni,ow;tdic2on to believe that the line must go through the origin.