ICS Part 1 Physics English Medium Chapter 1 Online Short Questions Test with Answers

Online Short Questions For Chapter 1 "ICS Part 1 Physics Chapter 1 Short Questions Test "

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Physics - ICS Part 1 Physics Chapter 1 Short Questions Test

Question # 1

Explain the term " precision" and accuracy ?

  • Ans 1: The 'Precision represents the magnitude of error in a measurement while the accuracy means to check how the measured values are closer to the actual value. The accuracy represents the relative error. It can be obtained by dividing the error with measured quantity.
    The accuracy depends on the error if the error is greater than smaller will be the accuracy of the measurements and vice versa.
    The accuracy of the measurements can be increased by taking several readings and take their average.
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Prepare Complete Set Wise Questions For Chapter 1 "ICS Part 1 Physics Chapter 1 Short Questions Test "

ICS Part 1 Physics Chapter 1 Short Questions Test - Set 1

Question # 1

Explain the term " precision" and accuracy ?

  • Ans 1: The 'Precision represents the magnitude of error in a measurement while the accuracy means to check how the measured values are closer to the actual value. The accuracy represents the relative error. It can be obtained by dividing the error with measured quantity.
    The accuracy depends on the error if the error is greater than smaller will be the accuracy of the measurements and vice versa.
    The accuracy of the measurements can be increased by taking several readings and take their average.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 2

Question # 1

What are supplementary units? Write their names.

  • Ans 1: The General Conference on Weights and Measure has not yet classified certain unit of SI under either base or derived units. Theses SI units are called supplementary units.
    Radian and Steradian are supplementary units.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 3

Question # 1

Define significant figures.

  • Ans 1: In any measurement, the accurately Known digits and the first doubtful digit are called the significant figures. For example, The number of significant figures in the measurement 02.59 are 3.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 4

Question # 1

Express the following quantities using prefixes.

  • Ans 1: 5000 g
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 5

Question # 1

Enthalpy is a state function Justify?

  • Ans 1: The total heat content of a system is called enthalpy. Equation
    H= E+PV E,P and V are state functions so enthalpy is also a state function.It is not possible to measure the enthalpy of a system in a given state.However change in enthalpy can be measured for achange in the state of system.

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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 6

Question # 1

Define Born-Haber cycle and lattice energy?

  • Ans 1: Born-Haber Cycle: The sum of energy changes for a closed cyclic process is zero, If the initial and final states are same.
    Lattice Energy: The amount of energy released when gaseous ions of opposite charges combine to give one mole of a crystalline ionic compound.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 7

Question # 1

Define the term error, uncertainty precision and accuracy in measurements?

  • Ans 1: Errors:The difference between measured value and actual value of a quantity is known as Error.
    Uncertainty:An estimate of the possible range of an error is known as uncertainty. (OR)
    The error which arises due to natural imperfections of the experimenter, the limitations of the apparatus and the changes in the environment during the measurement is known as uncertainty.
    Precision:The measure of the consistency of measurements is known as precision. It requirements the magnitude of error in measurements.
    Accuracy:The measure of correctness of a measurements is known as accuracy"
    The Accuracy means to check how the measure values is closer to the actual value It is a relative is closer to the actual value.It is a relative error. it can be obtained by dividing the error with measured quantity The accuracy depends on the error is greater than smaller will be the accuracy of the measurement can be increased by taking several reading and then take their average
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 8

Question # 1

What is physical significance of dimension of physical quantity?

  • Ans 1: Each base quantity is considered a dimension. It stands for the qualitative nature of the physical quantity. Dimensions give information about the nature of a physical quantity, its units of measure and correctness of physical equation.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 9

Question # 1

Define Measurement, unit and Magnitude?

  • Ans 1: Measurement:The comparison of some thing with some standard is known as measurement.
    Unit:The standard with which thing are compared is known as unit.
    Magnitude:A number with proper unit is known as magnitude.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 10

Question # 1

Define physical quantities and derived quantities.

  • Ans 1: Physical quantites: All measurable quantities are called physical quantities.
  • Ans 2: Example: Length mass, time and temperature etc.
  • Ans 3: Derived quantites: The quantities that are expressed in terms of base quantities are called derived quantities.
  • Ans 4: Examples: Area, volume, speed, force, work etc are derived quantities.
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ICS Part 1 Physics Short Questions Test

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