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

Differentiate between parent and daughter element.

  • Ans 1: The change of an element into a new element due to emission of radiation is called radioactive decay.The original atom is called parent element and the element formed due to this decay is called daughter element.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

Differentiate between parent and daughter element.

  • Ans 1: The change of an element into a new element due to emission of radiation is called radioactive decay.The original atom is called parent element and the element formed due to this decay is called daughter element.
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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

What factor make a Fusion reaction difficult to achieve?

  • Ans 1: A fusion reaction requires large energy and temperature ,up to million degrees centigrades,So a fusion reaction is difficult to achieve.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

Wh Geiger counter is not suitable for fast counting?

  • Ans 1: Geiger counter is not suitable for fast counting because of its longer dead time.The positive ions take several time as long to reach the outer cathode,because positive ions are very massive than the electrons.During this time further incoming particle can not be counted,This time is called as the dead time of counter which delays fast counting system.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

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