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

[单选题]
The variation of quantity P as quantity Q varies is plotted. Theoryc.. qxfv lu83c )sybmz7 k)vb* states that zqy8ku7* vb lcv ..ms))fbcx 3 ral-0ou 3gkfbqh( h8s0qr+.q P should vary linearly with Qfh 8r-hqb0ka(g quo3rq.sl+0.

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+5w6rr.7 )ftlkqgf ccsa 81wy graphs must go through the origin. In physics many do not. But the scatter of th1gra8w tcc7w)ff lk q5 ry6+.se 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.