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

Define Base and Derived Units.

  • Ans 1: Base Unit: The unit that describe base quantities are called base units.
    Examples: Unit of length is meter and Unit of mass is kilogram.
  • Ans 2: Derived Units: The units used to measure derived quantities are called derived units.
    Examples: Unit velocity is Meter per second (ms) Unit of acceleration is meter m3, Unit of force (Newton) N, Unit of presure is Pascal (Pa) Unit of charge Coulomb (C)
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 1

Question # 1

Define Base and Derived Units.

  • Ans 1: Base Unit: The unit that describe base quantities are called base units.
    Examples: Unit of length is meter and Unit of mass is kilogram.
  • Ans 2: Derived Units: The units used to measure derived quantities are called derived units.
    Examples: Unit velocity is Meter per second (ms) Unit of acceleration is meter m3, Unit of force (Newton) N, Unit of presure is Pascal (Pa) Unit of charge Coulomb (C)
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 2

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 3

Question # 1

Explain " Rounding off numbers ?

  • Ans 1: The quantities in a measurement are always rounded off to certain level of accuracy. The following rules must be observed while rounding off a number.
    1. If the dropping digits is less than "5" then the last retained digit is kept as it is For example 863.73 is rounded to 863.7
    2. If the dropping digits is greater than '5' then the last retained digits is increased by '1' for example 9.66 is rounded to 9.7
    3. If the dropping digits is '5' and the last retained digit is even then it will be remain uneffected. For example 66.45 is rounded to 66.4
    4. If the dropping is '5' and the last retained digit is add, then it will be increases by '1' for example 76.35 is rounded to 76.4
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 4

Question # 1

Add the mass given in kg up to appropriate precision: 2.189,0.089,11.8 and 5.32.

  • Ans 1: As m= 2.189+0.089 +11.8+5.32+19.398 kg
    By appropriate precision m= 19.4kg
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 5

Question # 1

Find the dimension of kinetic energy ?

  • Ans 1: pic
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 6

Question # 1

How many seconds are there in one year?

  • Ans 1: Now 1 year = 1x 365 days
    1 year = 365x 1 days
    1 year = 365x 24 hours
    1 year = 8760 x 1 seconds
    1 year = 3.1536x 107s
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 7

Question # 1

Define the term "Joule" and convert 15 calories to joules?

  • Ans 1: The energy expanded when a force of one Newton move an object one meter in the direction in which force is applied. Where one joule is equal 107 Ergs and 1 cal =4.184 J and 15 cal = 4.184x15=62.76J
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 8

Question # 1

which base quantities has units mole and kelvin

  • Ans 1: Mole: Mole is unit of base quantity "Amount of a substance"
  • Ans 2: Kelin: Kelvin is unit of base quantity "Temperature"
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 9

Question # 1

Define Base, Derived, supplementary, Units ?

  • Ans 1: Base Units:The units of base quantities are known as base unit.
    Base quantity: Symbol
    Length l
    Mass M
    Time t
    Electric current I
    Temperature T
    Derived Quantity:The unit of derived quantities are known as derived units. The derived units can be derived from base unit and supplementary units
    Supplementary Units:The general conference on weight and measures has not yet classified certain units of the SI under either base units or derived units such SI Units are called supplementary units This class contains only two units of purely geometrical quantities which are place angle and the said angle.
    1. Radian :It is the unit of plane angle. One radian represents a plane angle subtended at the center of a circle by on are of length equal to radius of the circle.
    2. Steradian:Steradian is the unit for a solid angle in a three dimensional space steradian is defined as "the solid angle subtended at the center of a sphere by an area of its surface equal to the square of the radius of that sphere"
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 10

Question # 1

Define derived units.

  • Ans 1: 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, pascal etc.
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