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

Differentiate between precise and accurate measurement.

  • Ans 1: Precis Measurement: A measurement which has less absolute uncertainty is called precise measurement.

    Accurate Measurement: is the one which has less fractional or percentage error.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 1

Question # 1

Differentiate between precise and accurate measurement.

  • Ans 1: Precis Measurement: A measurement which has less absolute uncertainty is called precise measurement.

    Accurate Measurement: is the one which has less fractional or percentage error.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 2

Question # 1

Define system of units ? Give the name of various system of unit?

  • Ans 1: System Units:A complete set of unit for all physical quantities is known as system of units .
    Explanation:There are several system of unit For example
    Foot - pound - system ( FPS)
    Meter - kilogram -second system (MKS )
    Centimetre - gram - second system (CGS )
    But the most popular system id the system international (SI)
    System International(SI):In 1960 on international committee agreed on a set of definitions and standards to describe the physical quantities. The system that was established is called system international (SI)
    The system international is used throughout the world. Its unit are convenient for daily use .
    The system international is build-up from three kinds of unit
    • Base Unit
    • Derived Units
    • Supplementary Units
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 3

Question # 1

What type of blood vessels surrounds the alveoli?

  • Ans 1: Artery
  • Ans 2: Arteriole
  • Ans 3: Capillary
  • Ans 4: Vein
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 4

Question # 1

What role SI units have played in the development of science

  • Ans 1: With the development of science and technology, S.I units fulfill the serious need of for a commonly accept system of unit all over the world.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 5

Question # 1

How can we reduce random and systematic error?

  • Ans 1: Reduce random error: Repeating the measurement several times and taking an average can reduce the effect of random error.

    Reduce systematic error: The systematic error can be reduced by comparing the instrument with another which is known to be more accurate and a correction factor is applied.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 6

Question # 1

How many nanoseconds are there in 1 year?

  • Ans 1: As 1 year = 3.136x107 s
    1 year = 3.1536x107 X1s
    1 year =3.1536x107x109x10-9s
    1 year =3.1536x107x10-9ns
    1 year =3.1536x 1016ns
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 7

Question # 1

Define anhydrobiosis with an example

  • Ans 1: The ability to tolerate dehydration this process is called anhydrobiosis for example kangaroo rat a desert animal can tolerate dehydration without drinking water by feeding desert plants containing more carbohydrates which produce water of metabolism
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 8

Question # 1

What is meant by coexistances.

  • Ans 1: Living with other human beigns in peace and harmony mutual peace and lvoe is claled coexistence
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 9

Question # 1

Define error and uncertainty ? Discuss the various types of error ?

  • Ans 1: Error:The difference between measured value and actual value is known as error.
    Uncertainty:The errors which a rises due to natural imperfection of the experimenter the limitation of the apparatus and the change in the environment during the measurement is known as Uncertainty
    Types of Errors:There are three type of errors which are given below.
    1. Personal Error:The error due to carelessness or improper knowledge about an instrument or incorrect reading of a scale by an experimenter is known as personal error. The personal error can be removed to some extent error if the experimenter take care during the measurement of any quantity and have proper knowledge about the measuring instrument.
    2. Systematic Error:The error due to faulty apparatus and poor calibration of the instrument is known as systematic error. The systematic error also a rises from zero error between scales as in vernier caliper screw gauge and spherometer. The systematic error can be removed by comparing the faulty instrument with some accurate and standard instrument. the difference of the two can be added tracted to the measurement if the error is positive then will be subtracted from faulty instrument reading for correctness. If the error is negative, then it will be added to the foulty instruments reading for correctness
    3. Statistical Error:The error due to repeated measurements of same quantity under same condition that result in different values of the same quantity is known random error.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 10

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 Short Questions Test

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