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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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.
Submit

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

Question # 1

Define mass defect and binding energy.

  • Ans 1: Mass defect: The mass of the nucleus is always less than the total mass of the protons and neutrons that make up the nucleus,The difference of the two masses is called mass defect.
    Binding energy:The missing mass is converted into energy at the formation of the nucleus and is called binding energy.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

Question # 1

What are thermal reactors?

  • Ans 1: The thermal reactors are called thermal reactors because the neutrons must be slowed down to thermal energies to produce further fission,They use natural uranium or slightly enriched uranium as fuel.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

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 5

Question # 1

Define half-line of radioactive element.How is it related with decay constant?

  • Ans 1: Half-line:T1/2is the period in which half of the atom of a radioactive element decay.
    It is related with a decay constant by formula.
    T1/2= 0.693/Λ
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ICS Part 2 Physics Chapter 21 Short Questions Preparation