ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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 # 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

Why moderators are used in the core of nuclear reactor?

Ans 1: The moderator ae used in the core to slow the neutrons down so that they can be captured and keep the chain reaction going.

Question # 4

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 # 5

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 # 6

What do you mean by critical mass and critical volume?

Ans 1: The mass of uranium in which one neutron out of all neutron out of all neutron produced in one fission reaction produces further fission reaction is called critical mass.

Question # 7

Define decay constant.

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

Question # 8

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 # 9

State two characteristics of beta particle.

Ans 1: They are negatively charged particle.
Their penetration power is high.

Question # 10

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

Ans 1: When no radioactive source is placed near the radiation detector,it records radiation,These radiations are called background radiations..
Its source are
1. Cosmic rays
2. presence of radioactive substance Earth crust and atmosphere.

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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 Baryons and Mesons.

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

Why moderators are used in the core of nuclear reactor?

What do you know about Radioactivity?

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

What do you mean by critical mass and critical volume?

Define decay constant.

Differentiate between controlled and uncontrolled reaction.

State two characteristics of beta particle.

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

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 Baryons and Mesons.

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

Why moderators are used in the core of nuclear reactor?

What do you know about Radioactivity?

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

What do you mean by critical mass and critical volume?

Define decay constant.

Differentiate between controlled and uncontrolled reaction.

State two characteristics of beta particle.

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

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

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

What factor make a Fusion reaction difficult to achieve?

How energy released when 1 amu converted into energy?

Differentiate between parent and daughter element.

What do you know about Radioactivity?

Define Half line and discuss its dependence.

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

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

Name the basic forces of nature.

Write name of different quarks.

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

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

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

Define Hadrons and Leptons.

Describe the principle of operation of solid state detector?

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

Wh Geiger counter is not suitable for fast counting?

How can radioactivity help in the treatment of cancer?

Define background radiations.What are their sources?

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

Define mass defect and binding energy.

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

Define mass defect and binding energy.

Define fission and fusion reaction.

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

Define Half line and discuss its dependence.

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

Differentiate between parent and daughter element.

What are thermal reactors?

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

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

Define nuclear fission.

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

How energy released when 1 amu converted into energy?

Why moderators are used in the core of nuclear reactor?

Differentiate between parent and daughter element.

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

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

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

How can radioactivity help in the treatment of cancer?

12th Class Physics
Short Questions Preparation