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ZIMSEC A-Level Physics

P.1Experimental work: recording, graphs and evaluation

Experimental work: recording, graphs and evaluation in ZIMSEC A-Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic56 practice questions2 lessons
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Overview

Form 5. Practised throughout Forms 5 and 6.

Learning objectives

What the syllabus expects you to be able to do.

  1. P.1.1Collect, tabulate and graph experimental data with correct headings, units, precision and significant figures.
  2. P.1.2Determine gradients and intercepts and use them to find constants.
  3. P.1.3Estimate uncertainties, identify limitations of a method and suggest improvements.

Lessons

  • Recording results, tables and graphs in practical physics

    40 min

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  • Uncertainty in readings, limitations and improvements

    40 min

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Sample question

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

Experimental work: recording, graphs and evaluation: sample question

1 mark

A student times a paper cone falling from a fixed height three times: 1.82 s1.82\ \text{s}, 1.94 s1.94\ \text{s} and 1.86 s1.86\ \text{s}. The stop-watch reads to 0.01 s0.01\ \text{s}. What is the best estimate of the absolute uncertainty in the time?

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