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A LevelPhysicsOCRExam Questions1. Development of Practical Skills in PhysicsHandling Data

Handling Data (OCR A Level Physics)

Exam Questions

9 mins9 questions
Medium
Hard
1
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A solid cylindrical glass rod has length 20.0 ± 0.1 cm and diameter 5.00 ± 0.01 mm.

What is the percentage uncertainty in the calculated volume of this rod?

  • 0.1 %

  • 0.2 %

  • 0.7 %

  • 0.9 %

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2
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Which is the best value for the elementary charge e in terms of both accuracy and uncertainty?

  • (1.5 ± 0.5) × 10−19C

  • (1.5 ± 0.4) × 10−19C

  • (1.7 ± 0.2) × 10−19C

  • (1.8 ± 0.2) × 10−19C

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3
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The student measures the height of a tube. The student’s values are:

83.5cm    82.9cm     83.3cm       83.1cm

What is the average height h and the absolute uncertainty in h?

  • 83.2 ± 0.3 cm

  • 83.2 ± 0.1 cm

  • 83.2 ± 0.5 cm

  • 83.1 ± 0.3 cm

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4
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A student of mass 85.2 kg uses a set of weighing scales to measure his mass three times. The following readings are obtained.

 

Mass / kg

Reading 1

87.2

Reading 2

87.1

Reading 3

87.2

Which statement describes the precision and accuracy of the data?

  • not precise to ± 0.1 kg and accurate to ± 0.1 kg

  • not precise to ± 0.1 kg and not accurate to ± 0.1 kg

  • precise to ± 0.1 kg and accurate to ± 0.1 kg

  • precise to ± 0.1 kg and not accurate to ± 0.1 kg

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5
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A hard disk is labeled as having a storage capacity of 420 GB. The letter B stands for byte, which is a unit. What is the equivalent storage capacity in bytes?

  • 4.20 x 108

  • 4.20 x 1011

  • 4.20 x 109

  • 4.20 x 1017

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1
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Which is the best estimate of the area of a rectangular field of length 98 ± 3 m and width 47 ± 2 m?

  • 4600 ± 5 m2

  • 4600 ± 6 m2

  • 4600 ± 300 m2

  • 4606 ± 337 m2

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2
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The units for the gradient of a graph are kg m-1 s-2.

Which one of the following options is a possible graph with this gradient?

  • 1-2-mcq-h-q2-opt-a-ocr-al-physics
  • 1-2-mcq-h-q2-opt-b-ocr-al-physics
  • 1-2-mcq-h-q2-opt-c-ocr-al-physics
  • 1-2-mcq-h-q2-opt-d-ocr-al-physics

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3
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A voltmeter and ammeter are used to determine the resistance in a resistor. The value of the resistance is found to be 8.50 Ω with an absolute uncertainty of 15 %. The current through the resistor is measured to be 2.35 A with an absolute uncertainty of 6%.

What is the uncertainty of the voltmeter?

  • ± 1.80 V

  • ± 0.09 V

  • ± 2.19 V

  • ± 1.28 V

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4
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A trolley is released from rest and it travels down a ramp. Its velocity is measured at 0.5 s intervals. The table of results are shown below, and a graph is plotted.

v / m s-1

t / s

0.620

0.5

1.99

1.0

3.00

1.5

3.98

2.0

4.99

2.5

Which statement is true?

  • There are no anomalies in the results

  • The area under the graph is 6.2 m (2 s.f)

  • The gradient of the graph is 1.7 m s-2 (2 s.f)

  • The graph will show an inversely proportional relationship between v and t

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