ICS Part 2 Physics Chapter 21 Short Questions Preparation

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.

Question # 2

Describe a brief account of interaction of various types of radiations with matter.

Ans 1:
1. An a particle has well defined range in a medium ,before coming to rest which is called range if a-particle.
2. It lose its energy due to excitation and ionization of atoms and molecules in matter.
Ans 2: b-particle:
1. The ionizing ability of b particles is about 100 times less than that of a alpha particle.
2. The range of b particle is 100 times more than that of a- particle.

Question # 3

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

Ans 1: Advantage and disadvantage of nuclear power are given below compared to the use of fossil generated power.
Advantage:
1. Much more energy is produced.
2. Produces no environmental pollution.
3. Electricity produced in this way is far cheaper than fossil fuel generated power.
Disadvantage :
1. Uranium mining is more dangerous than coal mining.
2. Nuclear waster is very injurous and harmful to living things.
3. Nuclear waste can not be transported through area of population whereas fossil fuel can be.

Question # 4

Define nuclear fission.

Ans 1: Such a reaction in which a heavy nucleus like that of uranium splits up into two nuclei of roughly equal size along with the emission of energy is called fission reaction.

Question # 5

Write names of hydrogen isotopes.

Ans 1: Three isotopes of hydrogen are:
1. Protium
2. Deuterium
3. Tritium

Question # 6

If nucleus has a life of one year,does this mean that it will be completely decayed after two years?

Ans 1: No it will not decay completely after two years.
Numbers of atom at initial stage =N_o
number of atoms decayed after first year =1/2N_o

Question # 7

Describe the principle of operation of solid state detector?

Ans 1: A solid state detector is a specially designed p-n junction operating under a reversed bias in which electron-hole pairs are produced by the incident radiation to cause a current pulse to flow through the external circuit.

Question # 8

Define half-line of radioactive element.How is it related with decay constant?

Ans 1: Half-line:T_1/2is the period in which half of the atom of a radioactive element decay.
It is related with a decay constant by formula.
T_1/2= 0.693/Λ

Question # 9

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.

Question # 10

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

12th Class PhysicsShort Questions Preparation

12th Class Physics Chapter Wise Preparation

Online Short Questions For Chapter 10 "ICS Part 2 Physics Chapter 21 Short Questions Preparation "

Physics - ICS Part 2 Physics Chapter 21 Short Questions Preparation

What is self-quenching in Geiger Muller Counter?

Describe a brief account of interaction of various types of radiations with matter.

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

Define nuclear fission.

Write names of hydrogen isotopes.

If nucleus has a life of one year,does this mean that it will be completely decayed after two years?

Describe the principle of operation of solid state detector?

Define half-line of radioactive element.How is it related with decay constant?

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

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

Prepare Complete Set Wise Questions For Chapter 10 "ICS Part 2 Physics Chapter 21 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

What is self-quenching in Geiger Muller Counter?

Describe a brief account of interaction of various types of radiations with matter.

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

Define nuclear fission.

Write names of hydrogen isotopes.

If nucleus has a life of one year,does this mean that it will be completely decayed after two years?

Describe the principle of operation of solid state detector?

Define half-line of radioactive element.How is it related with decay constant?

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

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

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

Define decay constant.

Discuss the advantages of fission power from point of view of safety,pollution and resources.

What information if revealed by the length and shape of track of an incident particle in Wilson Cloud Chamber?

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

Briefly describe the term radiography.

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

Define fission and fusion reaction.

What do you mean by quark?

Why are heavy nuclei unstable?

Define Hadrons and Leptons.

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

Define decay constant.

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

How alpha and beta may ionize an atom without directly hitting the electrons?

What is the function of control rods in nuclear reactor?

Define half-line of radioactive element.How is it related with decay constant?

How can radioactivity help in the treatment of cancer?

Describe the principle of operation of solid state detector.

Define fission and fusion reaction.

Differentiate between parent and daughter element.

Write name of different quarks.

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Differentiate between Baryons and Mesons.

What is half line?

What is self-quenching in Geiger Muller Counter?

Define nuclear fission.

What factor make a Fusion reaction difficult to achieve?

Briefly describe the term radiography.

If you swallowed a alpha source and beta source ,which would be more dangerous to you ?Explain

Define absorbed dose and Gray.

What do you mean by quark?

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

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Define Half line and discuss its dependence.

Briefly describe the term radiography.

What factor make a Fusion reaction difficult to achieve?

Distinguished between nuclear fission and nuclear fusion.

Describe a brief account of interaction of various types of radiations with matter.

Define decay constant.

Define background radiations.What are their sources?

12th Class Physics
Short Questions Preparation