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ZIMSEC A-Level Physics

1.2Errors and Uncertainties

Errors and Uncertainties in ZIMSEC A-Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
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Overview

Form 5.

Learning objectives

What the syllabus expects you to be able to do.

  1. 1.2.1Understand and apply: errors, precision, accuracy and combining uncertainties.
  2. 1.2.2Understand and apply: measuring instruments and the oscilloscope.

Lessons

  • Errors, precision, accuracy and combining uncertainties

    40 min

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  • Measuring instruments, light gates and the oscilloscope

    40 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Errors and Uncertainties: sample question

1 mark

Four students each measure the acceleration of free fall four times. The accepted value is 9.81 m s−29.81\ \text{m s}^{-2}. Whose readings, in m s−2\text{m s}^{-2}, are precise but not accurate?

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