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

Define Half line and discuss its dependence.

  • Ans 1: The half line T1/2of a radioactive elements is that period in which half of the atom decay.
    Dependence: The number of decaying atoms is proportional to the number of atoms present in the beginning of the period and is proportional to time interval.
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Prepare Complete Set Wise Questions For Chapter 10 "ICS Part 2 Physics Chapter 21 Short Questions Preparation "

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

Define Half line and discuss its dependence.

  • Ans 1: The half line T1/2of a radioactive elements is that period in which half of the atom decay.
    Dependence: The number of decaying atoms is proportional to the number of atoms present in the beginning of the period and is proportional to time interval.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

Question # 1

What do you understand by "background radiation "?State two source of this radiation?

  • Ans 1: When no radioactive source is placed near the radiation detector,it records radiation,These radiations are called background radiations..
    Its source are
    1. Cosmic rays
    2. presence of radioactive substance Earth crust and atmosphere.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

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 - Set 4

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 5

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

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