ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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

Ans 1: As alpha particle have greater energy and ionizing power than beta particle,so alpha particle are more dangerous than beta particle.
Critical volume:The volume of critical mass is called critical volume.

Question # 2

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.

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

Briefly give the use of (a)Wilson cloud chamber (b)G.M counter.

Ans 1: Wilson Cloud Chamber:It provides information about the change in mass and energy of radiating particles.
G.M Counter:It is used to determine the range and penetrating power of ionizing particles.

Question # 5

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.

Question # 6

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 # 7

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 # 8

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 # 9

What do you mean by quark?

Ans 1: Quark is the basic building block of mesons and baryons.In actual it is the basic building block matter,It is proposed by Murray Gell-Mann and G.Zweig .It is of six types: up,down,strange,charm,bottom and top.

Question # 10

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

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

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

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

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

Briefly give the use of (a)Wilson cloud chamber (b)G.M counter.

Define background radiations.What are their sources?

What is self-quenching in Geiger Muller Counter?

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

Describe the principle of operation of solid state detector?

What do you mean by quark?

Protons and neutron are formed by what types of quarks?

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

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

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

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

Briefly give the use of (a)Wilson cloud chamber (b)G.M counter.

Define background radiations.What are their sources?

What is self-quenching in Geiger Muller Counter?

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

Describe the principle of operation of solid state detector?

What do you mean by quark?

Protons and neutron are formed by what types of quarks?

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

Write name of different quarks.

Why moderators are used in the core of nuclear reactor?

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

Name the basic forces of nature.

State two characteristics of beta particle.

Define absorbed dose and Gray.

Differentiate between parent and daughter element.

What is radioactive tracer?Give its one application each in industry and medicine.

Define mass defect and binding energy.

Define nuclear fission.

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

Define nuclear fission.

Briefly describe the term radiography.

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

Wh Geiger counter is not suitable for fast counting?

Define decay constant.

What do you know about Radioactivity?

State two characteristics of beta particle.

What is half line?

Write names of hydrogen isotopes.

Define Half line and discuss its dependence.

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

How energy released when 1 amu converted into energy?

Define background radiations.What are their sources?

Define Half line and discuss its dependence.

What are thermal reactors?

Briefly describe the term radiography.

Define fission and fusion reaction.

Define absorbed dose and Gray.

How can radioactivity help in the treatment of cancer?

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

What is self-quenching in Geiger Muller Counter?

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

Protons and neutron are formed by what types of quarks?

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

What are the relation between decay constantλand the half-line of a radioactive element?

Define decay constant.

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

What is the function of control rods in nuclear reactor?

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

12th Class Physics
Short Questions Preparation