Mastering Physical Quantities
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Questions and Answers

Which of the following best describes a physical quantity?

  • A numerical value
  • An algebraic multiplication
  • A material or system that can be measured (correct)
  • A unit of measurement

    • How is a physical quantity expressed?

  • As an arbitrary unit
  • As a numerical value
  • As a unit symbol
  • As a value (correct)

    • According to ISO 80000-1, how is the value of a physical quantity expressed?

  • As the division of a numerical value and a unit
  • As the sum of a numerical value and a unit
  • As the product of a numerical value and a unit (correct)
  • As the difference of a numerical value and a unit

    • If Z is a physical quantity with a numerical value of 2 and a unit of 'metre', how is it expressed mathematically?

    <p>Z = { Z } × [ Z ]</p> Signup and view all the answers

    How can the numerical value of a physical quantity expressed in an arbitrary unit be obtained?

    <p>By dividing the physical quantity by the unit</p> Signup and view all the answers

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