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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

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2. Foundations in Physics

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3. Forces and Motion

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4. Electrons, Waves and Photons

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OCR H556 chapter questions and answers

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Quiz

1.2.2 Analysing Quantitative Data – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Repeat readings of a length are 4.2, 4.4 and 4.3 cm. What is a suitable uncertainty in the mean?
±0.2 cm
±0.1 cm
±0.3 cm
±1 cm
2.
Two lengths are 15.0 ± 0.2 cm and 10.0 ± 0.2 cm. Their difference is:
5.0 ± 0.0 cm
5.0 ± 0.2 cm
5.0 ± 0.4 cm
5.0 ± 0.04 cm
3.
A quantity z = a3 and a has a 2% uncertainty. The uncertainty in z is:
2%
3%
8%
6%
4.
A 0.5 m rule is read to ±1 mm for a length of 20 mm. The percentage uncertainty is:
0.5%
1%
5%
20%
5.
Resistance R = V/I, with 2% in V and 3% in I. The percentage uncertainty in R is:
5%
1%
6%
1.5%
6.
A measured g is 9.6 m s−2 and the accepted value is 9.8 m s−2. The percentage difference is about:
0.2%
2%
20%
0.02%
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