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

Name several repetitive phenomenon occurring in nature which could serve as reasonable time standard.

  • Ans 1: Some of the natural phenomena that can be used as time standard are as follow:
    1. The rotation of earth around the sun.
    2. The revolution of earth .
    3. The revolution of moon around the earth.
    4. Atomic vibrations in crystals.
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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

Name several repetitive phenomenon occurring in nature which could serve as reasonable time standard.

  • Ans 1: Some of the natural phenomena that can be used as time standard are as follow:
    1. The rotation of earth around the sun.
    2. The revolution of earth .
    3. The revolution of moon around the earth.
    4. Atomic vibrations in crystals.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 2

Question # 1

What do you mean by scientific notation? Give an example.

  • Ans 1: The standard form to represent numbers using power of ten is called scientific notation. The accepted practice is that there should be only one non-zero digit left o decimal. For Example
    The scientific notation of measurement 134.7 is 1.347 x 102.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 3

Question # 1

Define derived quantities and write the name of two derived quantities.

  • Ans 1: Derived quantities: Those physical quantities which are expressed in terms of base quantities are called the derived quantities.
  • Ans 2: Examples: Area, volume, speed, force, work, energy power, electric charge, electric potential.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 4

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 5

Question # 1

Define derived units and write two example.

  • Ans 1: Derived units: The units used to measure derived quantities are called derived units.
  • Ans 2: Examples: Unit of velocity is meter per second
    Unit of accelertationnn is meter per second per second ms
    Unit of Force is Newton (N)
    Unit of charge Coulomb (C)
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 6

Question # 1

Differentiate between the following? (a) Light year and year

  • Ans 1:
    1. Light Year:Light year is the unit of distance. It is defined as, " the distance travelled by light in vacuum in one year."
    2. Year:Year is the unit of time. It is defined as the time interval in which the earth completes one revolution around the sun"
    1 Year = 365.25 days
    and
    1 year = 365.25*24*3600 sec
    1 year = 31557600 sec
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 7

Question # 1

Give the drawbacks to use the period of pendulum as a time standard.

  • Ans 1:
    The value of time periods of a simple pendulum depends upon its length and gravitational acceleration. So, the following drawbacks will be observed.
    • The value of g varies with altitudes
    • Length of the pendulum varies due to the increase or decrease in temperature .
    • Air resistance will affect the time period.



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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 8

Question # 1

Give two example of phylum platyhelminthes and Nematoda.

  • Ans 1: Phylum platyhelminthes includes Liver fluke and Planaria.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 9

Question # 1

How many meters are there in one light year?

  • Ans 1: Since S= vt
    S =ct
    S = (3 x 108ms-1)(365x24x60x60 s)
    S= 9.46x 1015m
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 10

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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