ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

Differentiate between controlled and uncontrolled reaction.

Ans 1: To maintain a sustained controlled nuclear reaction,for every 2 or 3 neutrons released ,only one must be allowed to strike another uranium nucleus.it is called controlled chain reaction.
Ans 2: If more than one neutron produces further fission then it will grow uncontrolled and called uncontrolled chain reaction.

Question # 2

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.

Question # 3

Define decay constant.

Ans 1: Decay constant of any element is to the fraction of the decaying atoms per unit time.

Question # 4

Write names of hydrogen isotopes.

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

Question # 5

Differentiate between Baryons and Mesons.

Ans 1: Baryons:The particle equal in mass greater than protons are called baryons.It is made by 3 quarks.
Ans 2: Mesons: The particle which are lighter in mass than protons are called mesons,A pair of quark and an antiquark makes as meson.

Question # 6

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 # 7

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 # 8

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 # 9

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 # 10

What are isotopes?What do you have in common?

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.

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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

Differentiate between controlled and uncontrolled reaction.

What do you know about Radioactivity?

Define decay constant.

Write names of hydrogen isotopes.

Differentiate between Baryons and Mesons.

Define nuclear fission.

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

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

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

What are isotopes?What do you have in common?

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

Differentiate between controlled and uncontrolled reaction.

What do you know about Radioactivity?

Define decay constant.

Write names of hydrogen isotopes.

Differentiate between Baryons and Mesons.

Define nuclear fission.

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

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

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

What are isotopes?What do you have in common?

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

What is half line?

Differentiate between controlled and uncontrolled reaction.

Describe the principle of operation of solid state detector?

Define decay constant.

Write names of hydrogen isotopes.

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

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.

Wh Geiger counter is not suitable for fast counting?

What do you mean by quark?

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

Why are heavy nuclei unstable?

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

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 know about Radioactivity?

Define decay constant.

How energy released when 1 amu converted into energy?

What factor make a Fusion reaction difficult to achieve?

Define nuclear fission.

Protons and neutron are formed by what types of quarks?

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

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

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

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

Define mass defect and binding energy.

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

Protons and neutron are formed by what types of quarks?

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.

Why are heavy nuclei unstable?

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

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

Write names of hydrogen isotopes.

What do you know about Radioactivity?

State two characteristics of beta particle.

Name the basic forces of nature.

Describe the principle of operation of solid state detector.

Briefly describe the term radiography.

12th Class Physics
Short Questions Preparation