ICS Part 2 Physics Chapter 21 Short Questions Preparation


12th Class Physics
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Physics - ICS Part 2 Physics Chapter 21 Short Questions Preparation

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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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

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 2

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 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 is radioactive tracer?Give its one application each in industry and medicine.

  • Ans 1: Radioactive tracer is a radioactive isotope which acts as an indicator or tracer that makes it possible to follow the course of a chemical or biological process.They are used in
    1. Medicine to detect malignant tumors
    2. Agriculture to study the uptake of a fertilizer by a plant.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

A particle which produce more ionization ,is less penetrating.Why?

  • Ans 1: A particle with great power loses large amount of energy for small distances.That is,it produces more ionization but is less penetration.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation

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