本题目来源于试卷: Tools & Inquiries G.4 Concluding & Evaluating，类别为 IB化学
[单选题]
The diameter of a cylindrical --wmx s9/ j 6dguiw*2gn*wfyysample was measured using a vernier cal50 1m toh -sx+o*tqyzsiper at three x h1m5tqt-o+*sy oz0sdifferent points along the sample. The diameters measured were: 13.50 mm, 13.51 mm, 13.50 mm. The true diameter of the sample is 12.14 mm. What is the likely type of error, and how can the error be reduced?
A. Random error; repeating the experiment 3 more times
B. Random error; calibrating the vernier caliper
C. Systematic error; repeating the experiment 3 more times
D. Systematic error; calibrating the vernier caliper
参考答案: D
本题详细解析:
The readings are close to each other but are all consistently l2 l ry2mn,(xohil8 6wfar from the true value, indicating that the rihm86lnwll (2y 2xo, error is likely to be systematic.
Systematic errors cannot be corrected by repeating the experiment, and instead, the vernier caliper must be calibrated to correct the zero error.
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