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

[单选题]
The variation of quan7og: (9p)lntyxxt5 s-m+s3p m9c csxb tity P as quantity Q varies is plotted. Theory o)f 3ai 6/v(pcgl xk8*g l dg.cc*ufw8states that P should vary linearl.6 gacg3gpk*c( f w o)cfvxudll8* /i8y 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 t2tb77zz,es y jhe 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 r2byz,zjt 7s7e eason to believe that the line must go through the origin.