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

What do you know about Radioactivity?

  • Ans 1: The elements having charge number Z>82 are unstable and they emit invisible radiations which affect the photographic plate.Such element are called radioactive elements and this process is called radioactivity.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

What do you know about Radioactivity?

  • Ans 1: The elements having charge number Z>82 are unstable and they emit invisible radiations which affect the photographic plate.Such element are called radioactive elements and this process is called radioactivity.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

Question # 1

Protons and neutron are formed by what types of quarks?

  • Ans 1: Protons is formed by two up and one down quarks.Neutron is formed by two down and one up quarks.
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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

Define absorbed dose and Gray.

  • Ans 1: Absorbed dose:It is defined as the amount of energy absorbed from an ionizing radiation per unit mass of the absorbing body i.e.
    Absorbed dose=energy/mass
    Gray: it is defined as the amount of energy equal to one joule absorbed by a body of mass 1kg i.e
    gray=1 joule/1 kg
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

Briefly describe the term radiography.

  • Ans 1: The radiography is a technique used in medicine such as internal imaging of the brain to determine the size and location of the tumor precisely.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation