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

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
Submit

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

Name the basic forces of nature.

  • Ans 1: The basic forces of nature are
    1. Gravitational force
    2. Electromagnetic force
    3. Weak nuclear force
    4. Strong nuclear force
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

Write down two advantages of solid state detector over geiger muller counter.

  • Ans 1: Solid state detector can count very fast than gas filled detector.
    Solid state detector is much smaller in size.
    It operates at low voltage.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

Define background radiations.What are their sources?

  • Ans 1: When no radioactive source is placed near the radiations detector,it records radiations,These radiations are called background radiations.
    Its source are
    1. The cosmic rays which come to us from outer space.
    2. Radioactive substance present is the Earth's crest.
    3. Radioactive potassium and carbon in the body.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation

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