Units and Measurements in Physics
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Questions and Answers

The parameter used for calculating weight of the man is?

  • Length
  • Time
  • Mass (correct)
  • None of these
  • The quantity measured in kelvin is?

  • Length
  • Mass
  • Time
  • Temperature (correct)
  • The unit of acceleration in S.I. is?

  • km/h
  • m/s
  • km/h²
  • m/s² (correct)
  • The unit of force in C.G.S. is?

    <p>Dyne</p> Signup and view all the answers

    Kilogram metre per second square is the unit of?

    <p>Work</p> Signup and view all the answers

    The unit of work is?

    <p>Newton-metre</p> Signup and view all the answers

    The unit of plane angle is?

    <p>Radian</p> Signup and view all the answers

    The length of the table is 3 metre, here 3 is the?

    <p>Magnitude</p> Signup and view all the answers

    Out of the following which is not a requirement of standard unit?

    <p>It should be fixed with time and place</p> Signup and view all the answers

    The quantity used for measurement of physical quantity is called the unit of that quantity?

    <p>Quantity</p> Signup and view all the answers

    A quantity which can be measured (computed, quantified or enumerated) is known as?

    <p>Physical quantity</p> Signup and view all the answers

    A physical quantity is a quantity which can?

    <p>Be measured</p> Signup and view all the answers

    The physical quantity which does not depend on any other physical quantity for their measurement is called?

    <p>Fundamental quantity</p> Signup and view all the answers

    Which of the following is not a fundamental quantity?

    <p>Speed</p> Signup and view all the answers

    Out of the following the fundamental quantity is?

    <p>Time</p> Signup and view all the answers

    Physical quantity which depends on one or more fundamental quantities for their measurement is called as?

    <p>Derived quantity</p> Signup and view all the answers

    Study Notes

    Units and Measurements in Physics

    • Mass is the parameter used to calculate the weight of an object.
    • Temperature is measured in Kelvin.
    • The unit of acceleration in S.I. is expressed as m/s².
    • In the C.G.S. system, the unit of force is the dyne.
    • Kilogram metre per second square is the unit for work.
    • The unit of work can be represented as Newton-metre (also known as Joule).
    • A plane angle is measured in radians.
    • In a measurement like "3 metres," the number 3 represents the magnitude.
    • A requirement for standard units includes being universally accepted, well-defined, and consistent, but not fixed with time and place.
    • The unit of a physical quantity is what is used to express that quantity.
    • A physical quantity can be quantified or computed.
    • Fundamental quantities are those which can be measured directly.
    • Fundamental quantities do not rely on other physical quantities for their measurement.
    • Speed is not considered a fundamental quantity; it is derived from distance and time.
    • Momentum represents a fundamental physical quantity, along with mass, length, and time.
    • A derived quantity depends on fundamental quantities for its measurement, such as velocity (distance/time).
    • Understanding both fundamental and derived units is essential for measuring complex physical phenomena.

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    Description

    This quiz covers essential concepts of units and measurements in physics. You will explore fundamental quantities, their units, and measurement systems like S.I. and C.G.S. Test your knowledge on how to express various physical quantities and their significance.

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