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 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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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 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 - 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

What information if revealed by the length and shape of track of an incident particle in Wilson Cloud Chamber?

  • Ans 1: In a wilson cloud chamber
    1. Alpha particle have larger mass and greater ionizing power so its path is straight.
    2. Beta particle have less mass and less ionizing power,so its path is thinner shorter and discontinuous.
    3. Gamma particle have no mass and high penetrating power,so its leaves no definite track along its path,
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

Briefly give the use of (a)Wilson cloud chamber (b)G.M counter.

  • Ans 1: Wilson Cloud Chamber:It provides information about the change in mass and energy of radiating particles.
    G.M Counter:It is used to determine the range and penetrating power of ionizing particles.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

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