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

Define nuclear fission.

  • Ans 1: Such a reaction in which a heavy nucleus like that of uranium splits up into two nuclei of roughly equal size along with the emission of energy is called fission reaction.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

Define nuclear fission.

  • Ans 1: Such a reaction in which a heavy nucleus like that of uranium splits up into two nuclei of roughly equal size along with the emission of energy is called fission reaction.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

Question # 1

Write name of different quarks.

  • Ans 1: The name of different quarks are as follows
    Up,Down-Strange ,Charm,Top,Bottom
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

Question # 1

Why are heavy nuclei unstable?

  • Ans 1: Heavy nuclei are unstable because their binding energy per nucleon is less than lighter nuclei.So less energy is required to break heavy nuclei and they become unstable.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

Differentiate between Baryons and Mesons.

  • Ans 1: Baryons:The particle equal in mass greater than protons are called baryons.It is made by 3 quarks.

  • Ans 2: Mesons: The particle which are lighter in mass than protons are called mesons,A pair of quark and an antiquark makes as meson.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

What is half line?

  • Ans 1: The half line T1/2of a radioactive elements is that period in which half of the atoms decay.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation