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

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Physics - ICS Part 1 Physics Chapter 1 Short Questions Test

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 1

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 2

Question # 1

Define international system of units.

  • Ans 1: The international system of units is a scientific method of expressing the magnitudes of quantities of important natural phenomana. There are seven base units in the system, from which other units are derived. This system was formarly called the meter-kilogram second (MKS) system.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 3

Question # 1

An old saying is that " A chain is only as strong as its weakest link , " What analogous statement can you make regarding measurement ?

  • Ans 1: The analogous statement is that the result of an experimental data which is as accurate as measurements can be used in the computation.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 4

Question # 1

Define base quantities and units.

  • Ans 1: Base quantities: Base quantities are quantities on the basic of which other quantities are expressed.
  • Ans 2: Examples: Length mass, time, electric current, temperature, intensity of light, amount of substance.
  • Ans 3: Base Units: The units that decribe base quantities are called base units.
  • Ans 4: Examples: Second ampere, kelvin, kilogram metre.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 5

Question # 1

Define and explain supplementary units?

  • Ans 1: The general conference on Weights and Measures has not yet classified certain unit of SI under either base or derived units. These SI units are called supplementary units.
    Radian and Steradian are supplementary units.
    Radian: The radian is the plane angle between two radii of a circle which cut off on the circumference an arc, equal I length to the radius. It is two dimensional angles.
    Steradian: The Sterdian is the solid angle subtended at the center of the sphere by an area of its surface equal to the square of radius of the sphere. It is three dimensional angles.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 6

Question # 1

Differentiate between the precision and accuracy.

  • Ans 1: Precision: A measurement which has less absolute uncertainty is called precise measurement. The precision of a measurement is determined by the instrument being used.Absolute uncertainty , in effect, is equal to the least count of measuring instrument.
    Accuracy: is the one which has less fractional or percentage error. Accuracy measures,how close a measured value is to the actual value.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 7

Question # 1

Define basic units.

  • Ans 1: The units associated with the base quantities are called base units. Theses are meter, kilogram, second, ampere, kelvin, candela, mole.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 8

Question # 1

What is importance of bivalent formation?.

  • Ans 1: Due to bivalent formation of homologous chromosomes,the non sister chromatids exchange their segment during the crossing over resulting in new recombination.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 9

Question # 1

How the distance between interference fringes will be affected if the distance between the slits in Young 's experiment is doubled.?

  • Ans 1: pic
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 10

Question # 1

Define Physical Quantities ? Explain base quantities and derived quantities?

  • Ans 1: Physical Quantities:All the measurable quantities are known as physical quantities for example, speed, mass , force, velocity, momentum temperature etc
    • Base Quantities:These are those physical quantities in term of which other physical quantities can be defined the base quantities can not be defined in term of other physical quantities.
    Example of base quantities:These are the seven base quantities, which are given below.
    1. Mass
    2. Length
    3. Time
    4. Current
    5. Temperature
    6. Amount of substance
    7. Luminous intensity
    • Derived Quantities:Those physical quantities which can be derived from base quantities are known as derived quantities
    Example of derived quantities:
    Force, Work, Power, energy, momentum, torque, speed, acceleration etc are the example of derived physical quantities

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ICS Part 1 Physics Short Questions Test

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