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

If you swallowed a alpha source and beta source ,which would be more dangerous to you ?Explain

  • Ans 1: As alpha particle have greater energy and ionizing power than beta particle,so alpha particle are more dangerous than beta particle.
    Critical volume:The volume of critical mass is called critical volume.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

If you swallowed a alpha source and beta source ,which would be more dangerous to you ?Explain

  • Ans 1: As alpha particle have greater energy and ionizing power than beta particle,so alpha particle are more dangerous than beta particle.
    Critical volume:The volume of critical mass is called critical volume.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

Question # 1

What is the function of control rods in nuclear reactor?

  • Ans 1: Controls rods made of Cadmium or Boron are used for the control of number of neutrons,so that of all the neutrons produced in fission ,only one neutrons produces further fission reaction.
    In case of emergency or for repair purpose control rods are used to stop the chain reaction and shut down the reactor.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

Question # 1

If you swallowed a alpha source and beta source ,which would be more dangerous to you ?Explain

  • Ans 1: As alpha particle have greater energy and ionizing power than beta particle,so alpha particle are more dangerous than beta particle.
    Critical volume:The volume of critical mass is called critical volume.
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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

What is radioactivity decay?Give an example.

  • Ans 1: The emission of radiations from elements having charge number Z greater than 82 is called radioactivity or radioactive decay.
    The emission of an a-particle from radium-226 ,result in the formation of radon gas.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation