Curriculum
Course: OCR A Level Physics A H556
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Curriculum

OCR A Level Physics A H556

1. Development of Practical Skills in Physics

0/56 Dr Dabour Hub Science Diagram and Course Material

2. Foundations in Physics

0/29 Dr Dabour Hub Science Diagram and Course Material

3. Forces and Motion

0/108 Dr Dabour Hub Science Diagram and Course Material

4. Electrons, Waves and Photons

0/71 Dr Dabour Hub Science Diagram and Course Material
Quiz

1.2.1 Sources of Uncertainty – Check yourself

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1.
Which type of error is reduced by taking the mean of many readings?
random error
systematic error
zero error
calibration error
2.
A micrometer reads +0.02 mm when closed. This is an example of a...
random error
zero error (systematic)
mistake
resolution limit
3.
A reading of 12.0 cm has absolute uncertainty 0.3 cm. The percentage uncertainty is...
0.3%
3.6%
2.5%
25%
4.
The radius of a circle is measured with 3% uncertainty. The percentage uncertainty in its area is...
3%
1.5%
9%
6%
5.
Two lengths are 20.0 ± 0.2 cm and 12.0 ± 0.2 cm. The uncertainty in their difference is...
±0.0 cm
±0.2 cm
±0.4 cm
±1.0 cm
6.
Readings of 4.8, 5.2, 5.0, 5.4 and 4.6 are taken. The mean and half-range uncertainty are...
5.0 ± 0.8
5.0 ± 0.4
5.2 ± 0.4
5.0 ± 0.2
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