ICS Part 2 Physics Chapter 21 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

Differentiate between controlled and uncontrolled reaction.

  • Ans 1: To maintain a sustained controlled nuclear reaction,for every 2 or 3 neutrons released ,only one must be allowed to strike another uranium nucleus.it is called controlled chain reaction.
  • Ans 2: If more than one neutron produces further fission then it will grow uncontrolled and called uncontrolled chain reaction.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

Differentiate between controlled and uncontrolled reaction.

  • Ans 1: To maintain a sustained controlled nuclear reaction,for every 2 or 3 neutrons released ,only one must be allowed to strike another uranium nucleus.it is called controlled chain reaction.
  • Ans 2: If more than one neutron produces further fission then it will grow uncontrolled and called uncontrolled chain reaction.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

Question # 1

How alpha and beta may ionize an atom without directly hitting the electrons?

  • Ans 1: As alpha and beta are electrically charged particle,so they can cause ionization without hitting an atom either by,repellings the electron of target particle.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

Question # 1

Discuss the advantages of fission power from point of view of safety,pollution and resources.

  • Ans 1: Advantage of nuclear power are given below
    1. Nuclear fission energy,release a highly reduced amount of the gases into the air,resulting in a slower rate of global warming and pollution.
    2. The energy is quick to create;meaning that they are able to make a large amount of some form of emergency required it.
    3. Much more energy is produced.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

How alpha and beta may ionize an atom without directly hitting the electrons?

  • Ans 1: As alpha and beta are electrically charged particle,so they can cause ionization without hitting an atom either by,repellings the electron of target particle.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

How energy released when 1 amu converted into energy?

  • Ans 1: 1 amu= 1.66 x10-27kg

    the energy of 1 amu is 1 amu =1.494 x10-10J
    1 amu= 931 MeV
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ICS Part 2 Physics Chapter 21 Short Questions Preparation