ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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 # 2

Differentiate between parent and daughter element.

Ans 1: The change of an element into a new element due to emission of radiation is called radioactive decay.The original atom is called parent element and the element formed due to this decay is called daughter element.

Question # 3

Describe the principle of operation of solid state detector.

Ans 1: The principle of operation of solid state detector is based upon the production of electron-hole pair to cause a pulse of current.

Question # 4

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.

Question # 5

What is radioactivity decay?Give an example.

Ans 1: The emission of radiations from elements having charge number Z greater than 82 is called radioactivity or radioactive decay.
The emission of an a-particle from radium-226 ,result in the formation of radon gas.

Question # 6

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 # 7

Define mass defect and binding energy.

Ans 1: Mass defect: The mass of the nucleus is always less than the total mass of the protons and neutrons that make up the nucleus,The difference of the two masses is called mass defect.
Binding energy:The missing mass is converted into energy at the formation of the nucleus and is called binding energy.

Question # 8

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 # 9

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

Ans 1: In a wilson cloud chamber
1. Alpha particle have larger mass and greater ionizing power so its path is straight.
2. Beta particle have less mass and less ionizing power,so its path is thinner shorter and discontinuous.
3. Gamma particle have no mass and high penetrating power,so its leaves no definite track along its path,

Question # 10

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

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

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

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

Differentiate between parent and daughter element.

Describe the principle of operation of solid state detector.

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

What is radioactivity decay?Give an example.

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

Define mass defect and binding energy.

What is self-quenching in Geiger Muller Counter?

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

Name the basic forces of nature.

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

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

Differentiate between parent and daughter element.

Describe the principle of operation of solid state detector.

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

What is radioactivity decay?Give an example.

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

Define mass defect and binding energy.

What is self-quenching in Geiger Muller Counter?

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

Name the basic forces of nature.

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

Write names of hydrogen isotopes.

What are isotopes?What do you have in common?

What are thermal reactors?

Distinguished between nuclear fission and nuclear fusion.

Define Half line and discuss its dependence.

What do you mean by critical mass and critical volume?

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

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

Differentiate between controlled and uncontrolled reaction.

Define nuclear fission.

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

Define decay constant.

Differentiate between Baryons and Mesons.

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

What is the function of control rods in nuclear reactor?

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

Protons and neutron are formed by what types of quarks?

Why moderators are used in the core of nuclear reactor?

What is self-quenching in Geiger Muller Counter?

Differentiate between parent and daughter element.

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

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

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

Differentiate between parent and daughter element.

Define nuclear fission.

Why are heavy nuclei unstable?

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

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

Define background radiations.What are their sources?

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

Define fission and fusion reaction.

How can radioactivity help in the treatment of cancer?

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

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

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

Write names of hydrogen isotopes.

Write name of different quarks.

Name the basic forces of nature.

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

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

12th Class Physics
Short Questions Preparation