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.

Question # 2

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 # 3

What is meant by dose of radiation?What is its SI units?

Ans 1: Radiation dose is a measure of the amount of exposure to radiation.There are three kinds of dose:
1. Absorbed dose: it is the amount of energy deposited by radiation in a mass.
D=E/m its SI unit is Gy.
2.Equivalent dose: It is calculated for individual organ
D_e=D*RBE
3.Effective dose: It is calculated for the whole body,It is also measured ni Sv.

Question # 4

What are thermal reactors?

Ans 1: The thermal reactors are called thermal reactors because the neutrons must be slowed down to thermal energies to produce further fission,They use natural uranium or slightly enriched uranium as fuel.

Question # 5

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 # 6

Define Half line and discuss its dependence.

Ans 1: The half line T_1/2of a radioactive elements is that period in which half of the atom decay.
Dependence: The number of decaying atoms is proportional to the number of atoms present in the beginning of the period and is proportional to time interval.

Question # 7

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

Ans 1: Radioactive tracer is a radioactive isotope which acts as an indicator or tracer that makes it possible to follow the course of a chemical or biological process.They are used in
1. Medicine to detect malignant tumors
2. Agriculture to study the uptake of a fertilizer by a plant.

Question # 8

Define Hadrons and Leptons.

Ans 1: Hadrons: These are not elementary particle,They are composed of other elementary particle called quarks.The example of hadrons are protons,neutrons,mesons etc,They experience strong nuclear force.
Laptons: The are elementary particles.They do not experience strong nuclear force,The example of laptons are electrons .muons and neutrinos etc.

Question # 9

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 # 10

What do you know about Radioactivity?

Ans 1: The elements having charge number Z>82 are unstable and they emit invisible radiations which affect the photographic plate.Such element are called radioactive elements and this process is called radioactivity.

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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 factor make a Fusion reaction difficult to achieve?

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

What is meant by dose of radiation?What is its SI units?

What are thermal reactors?

Briefly describe the term radiography.

Define Half line and discuss its dependence.

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

Define Hadrons and Leptons.

Define nuclear fission.

What do you know about Radioactivity?

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 factor make a Fusion reaction difficult to achieve?

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

What is meant by dose of radiation?What is its SI units?

What are thermal reactors?

Briefly describe the term radiography.

Define Half line and discuss its dependence.

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

Define Hadrons and Leptons.

Define nuclear fission.

What do you know about Radioactivity?

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

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

What is self-quenching in Geiger Muller Counter?

What is meant by dose of radiation?What is its SI units?

Define background radiations.What are their sources?

Define nuclear fission.

What are thermal reactors?

Why moderators are used in the core of nuclear reactor?

Write name of different quarks.

Distinguished between nuclear fission and nuclear fusion.

Define Half line and discuss its dependence.

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

Why moderators are used in the core of nuclear reactor?

Name the basic forces of nature.

Write names of hydrogen isotopes.

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

Describe the principle of operation of solid state detector.

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

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

What is radioactivity decay?Give an example.

What do you mean by quark?

What are thermal reactors?

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

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

Write names of hydrogen isotopes.

What is the function of control rods in nuclear reactor?

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

What is radioactivity decay?Give an example.

Describe the principle of operation of solid state detector?

What do you mean by critical mass and critical volume?

Describe the principle of operation of solid state detector.

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

State two characteristics of beta particle.

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

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?

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

What are isotopes?What do you have in common?

State two characteristics of beta particle.

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

Differentiate between parent and daughter element.

12th Class Physics
Short Questions Preparation