Kognity IB Physics A.0 Measurements & Uncertainty (id: 92f2eca62)

[单选题]
By averaging three measur.d ,z9n9 4jghob6i lolem)hi(d0rdcya f5axm 0 o)ed1.bents of the same quantity which of the following can be reduba cod)df0d e 1 x0a.mir(y5h)ced?

A. Random errors
B. Systematic errors
C. Random & systematic errors
D. Zero errors


参考答案:  A


本题详细解析:
Systematic errors arise due to faulty instrumentation or consistently ohp fj7l fpq48e n001xbad technique. Averaging repeated meaf0l 81h7ne 0pfqx ojp4surements will not change a systematic bias. So B & C are incorrect. Zero errors are examples of systematic errors, where a the zero of an instrument is not correctly calibrated. So D is incorrect. Random errors will be sometimes too high and at other times too low – so averaging them will have the effect of reducing the random error. Hence A is correct.