BGCSE Physics Measurement
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Questions and Answers

Which instrument has the finest scale for more precise measurement?

  • Instrument B
  • Instrument A
  • Instrument D
  • Instrument C (correct)

    • Which velocity-time graph represents an object reaching terminal velocity?

  • Graph C (correct)
  • Graph B
  • Graph A
  • Graph D

    • Why is Instrument C more suitable for accurate length measurements?

  • It is longer than the others.
  • It is easier to read.
  • It has more subdivisions for finer measurement. (correct)
  • It has larger numbers.

    • Which graph shows an unrealistic representation of an object falling through air?

    <p>Graph B</p> Signup and view all the answers

    How is terminal velocity reached according to the correct graph?

    <p>Velocity increases rapidly then levels off.</p> Signup and view all the answers

    Study Notes

    Measuring Length and Motion

    Measuring Length

    • Instrument A has a scale with markings every 1 cm, indicating that it can measure length with an accuracy of 1 cm.
    • Instrument B has a scale with markings every 1 cm, similar to Instrument A.
    • Instrument C has a scale with markings every 0.5 cm, indicating that it can measure length with an accuracy of 0.5 cm.
    • Instrument D has a scale with markings every 0.1 cm, indicating that it can measure length with an accuracy of 0.1 cm.
    • Instrument D would give the most accurate reading due to its scale markings every 0.1 cm.

    Motion and Velocity-Time Graphs

    • An object falls freely through air and reaches terminal velocity before it touches the ground.
    • The velocity-time graph of the object shows an initial increase in velocity, followed by a constant velocity.
    • The correct velocity-time graph shows a curved line that eventually becomes horizontal, indicating terminal velocity.
    • Graph A shows an initial increase in velocity, followed by a constant velocity, making it the correct graph.
    • The other graphs (B, C, and D) do not show the correct velocity-time relationship for an object reaching terminal velocity.

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    Description

    This quiz is for BGCSE Physics students, covering topics such as measurement of length and velocity. It includes multiple-choice questions to test understanding of these concepts.

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