ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

How energy released when 1 amu converted into energy?

Ans 1: 1 amu= 1.66 x10^-27kg

the energy of 1 amu is 1 amu =1.494 x10^-10J
1 amu= 931 MeV

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 half line?

Ans 1: The half line T_1/2of a radioactive elements is that period in which half of the atoms decay.

Question # 4

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 # 5

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

Ans 1: The relation between decay constantλand the half line (T_1/2) isλT_1/2=0.693

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

Why are heavy nuclei unstable?

Ans 1: Heavy nuclei are unstable because their binding energy per nucleon is less than lighter nuclei.So less energy is required to break heavy nuclei and they become unstable.

Question # 8

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 # 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

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.

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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

How energy released when 1 amu converted into energy?

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

What is half line?

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

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

What do you mean by critical mass and critical volume?

Why are heavy nuclei unstable?

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

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

Why moderators are used in the core of nuclear reactor?

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

How energy released when 1 amu converted into energy?

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

What is half line?

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

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

What do you mean by critical mass and critical volume?

Why are heavy nuclei unstable?

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

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

Why moderators are used in the core of nuclear reactor?

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

Define fission and fusion reaction.

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

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

Define mass defect and binding energy.

Define absorbed dose and Gray.

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

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

Define Half line and discuss its dependence.

What is the function of control rods in nuclear reactor?

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

Protons and neutron are formed by what types of quarks?

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

What is half line?

Write names of hydrogen isotopes.

Distinguished between nuclear fission and nuclear fusion.

Define absorbed dose and Gray.

Write name of different quarks.

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

What is self-quenching in Geiger Muller Counter?

Define Hadrons and Leptons.

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?

What is the function of control rods in nuclear reactor?

How can radioactivity help in the treatment of cancer?

Define absorbed dose and Gray.

What is self-quenching in Geiger Muller Counter?

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?

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

State two characteristics of beta particle.

Distinguished between nuclear fission and nuclear fusion.

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

What is radioactivity decay?Give an example.

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

How can radioactivity help in the treatment of cancer?

Define absorbed dose and Gray.

Write name of different quarks.

Why are heavy nuclei unstable?

What are isotopes?What do you have in common?

12th Class Physics
Short Questions Preparation