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
Submit

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

Question # 1

What is self-quenching in Geiger Muller Counter?

  • Ans 1: A small amount of gas is added into the GM counter is called self quenching or internal quenching,In GM counter the phenomena of quenching is to save the counter from spurious or false counts.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

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 - Set 4

Question # 1

Define decay constant.

  • Ans 1: Decay constant of any element is to the fraction of the decaying atoms per unit time.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

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