本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty,类别为 IB物理学
[单选题]
A student measures two lengths as follov:xkw d+7mp gwcke8(k+:k 9clw *4py :ndrj.w :p6gimts: Which of the following quantities has the largest percentage uncertainty?
A.
B.
C.
D.
参考答案: D
本题详细解析:
The largest percentage uncertainty will result from the largest absoq uaz,lc/ ar956lwou0lute uncertainty divided by the smallest measurement value. A and B have an absolute uncertainty of 0.1 cm, while for C & D it is 0.2 cm. So the percentage uncertainties are: A 1%; B 0.5%; C 0.67%; and D 2%. Clear6w0 o rzc5 9,u/alqlualy D is the largest.
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