ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

Define fission and fusion reaction.

Ans 1: Fission: 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.
Ans 2: Fusion: A reaction in which two light of nuclei merge to form a heavy nucleus is called fusion reaction.It requires very high temperature.

Question # 2

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 # 3

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 # 4

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 # 5

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.

Question # 6

Briefly describe the term radiography.

Ans 1: The radiography is a technique used in medicine such as internal imaging of the brain to determine the size and location of the tumor precisely.

Question # 7

Define absorbed dose and Gray.

Ans 1: Absorbed dose:It is defined as the amount of energy absorbed from an ionizing radiation per unit mass of the absorbing body i.e.
Absorbed dose=energy/mass
Gray: it is defined as the amount of energy equal to one joule absorbed by a body of mass 1kg i.e
gray=1 joule/1 kg

Question # 8

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 # 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

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.

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

Define fission and fusion reaction.

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

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

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

Protons and neutron are formed by what types of quarks?

Briefly describe the term radiography.

Define absorbed dose and Gray.

Define nuclear fission.

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

Describe the principle of operation of solid state detector?

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

Define fission and fusion reaction.

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

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

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

Protons and neutron are formed by what types of quarks?

Briefly describe the term radiography.

Define absorbed dose and Gray.

Define nuclear fission.

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

Describe the principle of operation of solid state detector?

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

Describe the principle of operation of solid state detector.

Wh Geiger counter is not suitable for fast counting?

Briefly describe the term radiography.

Define background radiations.What are their sources?

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

Why moderators are used in the core of nuclear reactor?

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

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

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

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

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

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

Protons and neutron are formed by what types of quarks?

Differentiate between Baryons and Mesons.

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

Distinguished between nuclear fission and nuclear fusion.

Write down two advantages of solid state detector over geiger muller counter.

Wh Geiger counter is not suitable for fast counting?

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

Which radiation does would deposit more energy to the body(a)10 m Gy to the hand (b)1m Gy dose to entire body.

What is radioactivity decay?Give an example.

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

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

What is the function of control rods in nuclear reactor?

Write down two advantages of solid state detector over geiger muller counter.

What do you mean by quark?

What do you know about Radioactivity?

Define Half line and discuss its dependence.

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

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

How energy released when 1 amu converted into energy?

Name the basic forces of nature.

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

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

Briefly describe the term radiography.

What do you mean by critical mass and critical volume?

What factor make a Fusion reaction difficult to achieve?

What are thermal reactors?

Which radiation does would deposit more energy to the body(a)10 m Gy to the hand (b)1m Gy dose to entire body.

Write down two advantages of solid state detector over geiger muller counter.

12th Class Physics
Short Questions Preparation