ICS Part 2 Physics Chapter 21 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Online Short Questions For Chapter 10 "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

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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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 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 - Set 2

Question # 1

What are isotopes?What do they have common and what are their difference.

  • Ans 1: Isotopes are such nuclei of an element that have the same charge number Z but have different mass number A.It means,in the nucleus the number of protons is the same but the number of neutrons is different.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

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 4

Question # 1

What do you understand by "background radiation "?State two source of this radiation?

  • Ans 1: When no radioactive source is placed near the radiation detector,it records radiation,These radiations are called background radiations..
    Its source are
    1. Cosmic rays
    2. presence of radioactive substance Earth crust and atmosphere.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

State two characteristics of beta particle.

  • Ans 1: They are negatively charged particle.
    Their penetration power is high.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation

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