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

Are radius and steradian the basic units of SI? Justify your answer?

  • Ans 1: Radian and steradians are not the basic units of SI. These are the units of purely geometrical quantities i,e plane angle and solid angle respectively. The general conference on weight and measures has not yet classified there units under either base unit or derived units these are called supplementary units.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 1

Question # 1

Are radius and steradian the basic units of SI? Justify your answer?

  • Ans 1: Radian and steradians are not the basic units of SI. These are the units of purely geometrical quantities i,e plane angle and solid angle respectively. The general conference on weight and measures has not yet classified there units under either base unit or derived units these are called supplementary units.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 2

Question # 1

Discuss the assessment of uncertainty in the final result?

  • Ans 1: pic
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 3

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 4

Question # 1

What do you mean by significant figures ? Give the rules for determining significant figures ?

  • Ans 1: Significant Figures:The combination of accurately known digits and the first doubtful digits during a measurement are known as as significant figures
    Rules for determining significant figures:
    1. All non-zero digits from '1' to '9' are significant for example in 36.473 m there are five significant figure
    2. All zero between two non-zero digits are significant for example in y= 4.03 m there are three significant figures
    3. The zero to the right of a decimal symbol and to the left of non-zero digits are not significant
    4. All zero to the right of a decimal appears after non-zero digits are significant
    5. In case of scientific notation the figures before the power of ten are significant
    6. In case of addition and subtraction the result obtained is retained to the measurement which is least precise in the data
    7. In case of multiplication and division the final result is retained to the measurement which contains the last number of significant figure
    8. In case of rounding of non-significant figures the following rules should be followed.
    • IF the dropping digits is less than '5' then it will be just ignored For example 863.73 is rounded to 863.7
    • If the dropping digits is greater than '5' then the last retained digit is increased by '1' for example 8.76 is rounded of 8.8
    • If the dropping digits is '5' and the last retained digits is even then it will remains uneffected. for example, 56.45 is rounded to 56.4
    • If the dropping digits is '5' and the last retained and the last retained digits is add than it will be increased by '1' for example 46.35 is rounded to 46.4
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 5

Question # 1

Define least count and write meter rod's least count

  • Ans 1: smallest measurement hat can be taken by an instrument is called least count of that instrument Least Count
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 6

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 7

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 8

Question # 1

Differentiate between Base Units and Derived Units.

  • Ans 1: Base Units:The units associated with the base quantities are called base units. Other units are derived from base units . There are meter, Kilogram, second, candela, mole, ampere, kelvin.

    Derived Units:The units associated with the derived quantities are called derived units. SI units for measuring all other physical quantities are derived from the base and supplementary units. For example , newton, joule,watt and pascal are derived units.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 9

Question # 1

What are three fundamental frontiers of fundamental science?

  • Ans 1: The three fundamental frontiers of fundamental science are:
    1. The world of extremely large bodies.
    2. The world of extremely small objects.
    3. The world of middle sized objects. OR The world of complex matter.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 10

Question # 1

What is Scientific Notation .Explain ?

  • Ans 1: Writting number in power of ten or standard from N=M*10nis called scientific Notation.
    Explanation:With the help of Scientific Notation, we can express very large number or small number very easily. A large or small number "N" can be expressed in term of a number "M" and a power of '10 '
    N= M * 10n-------------------(1)
    In equation 1 "M" represents a number whose first digit is non-zero digit. "n" represents the power of 10, which may be positive or negative
    For example 150,000,000,000 m can be expressed in scientific notation as under
    150,000,000,000 m = 1.5* 1011m
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