ICS Part 2 Physics Chapter 21 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Online Short Questions For Chapter 10 "ICS Part 2 Physics Chapter 21 Short Questions Preparation "

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Physics - ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

A particle which produce more ionization ,is less penetrating.Why?

  • Ans 1: A particle with great power loses large amount of energy for small distances.That is,it produces more ionization but is less penetration.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

A particle which produce more ionization ,is less penetrating.Why?

  • Ans 1: A particle with great power loses large amount of energy for small distances.That is,it produces more ionization but is less penetration.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

Question # 1

Distinguished between nuclear fission and nuclear fusion.

  • Ans 1: Nuclear Fission: Such a reaction in which a heavy nuclei like that of uranium splits up into two of roughly equal size along with the emission of energy is called fission reaction.
  • Ans 2: Nuclear Fusion:A reaction in which two lights nuclei merge to form a heavy nucleus is called fusion reaction.It require very high temperature.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

Question # 1

What are the relation between decay constantλand the half-line of a radioactive element?

  • Ans 1: The relation between decay constantλand the half line (T1/2) isλT1/2=0.693
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

Define background radiations.What are their sources?

  • Ans 1: When no radioactive source is placed near the radiations detector,it records radiations,These radiations are called background radiations.
    Its source are
    1. The cosmic rays which come to us from outer space.
    2. Radioactive substance present is the Earth's crest.
    3. Radioactive potassium and carbon in the body.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

Define Hadrons and Leptons.

  • Ans 1: Hadrons: These are not elementary particle,They are composed of other elementary particle called quarks.The example of hadrons are protons,neutrons,mesons etc,They experience strong nuclear force.
    Laptons: The are elementary particles.They do not experience strong nuclear force,The example of laptons are electrons .muons and neutrinos etc.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation

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