ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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 # 2

What is the function of control rods in nuclear reactor?

Ans 1: Controls rods made of Cadmium or Boron are used for the control of number of neutrons,so that of all the neutrons produced in fission ,only one neutrons produces further fission reaction.
In case of emergency or for repair purpose control rods are used to stop the chain reaction and shut down the reactor.

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

Write names of hydrogen isotopes.

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

Question # 5

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 # 6

Define background radiations.What are their sources?

Ans 1: When no radioactive source is placed near the radiations detector,it records radiations,These radiations are called background radiations.
Its source are
1. The cosmic rays which come to us from outer space.
2. Radioactive substance present is the Earth's crest.
3. Radioactive potassium and carbon in the body.

Question # 7

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.

Question # 8

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

Ans 1: Advantage of nuclear power are given below
1. Nuclear fission energy,release a highly reduced amount of the gases into the air,resulting in a slower rate of global warming and pollution.
2. The energy is quick to create;meaning that they are able to make a large amount of some form of emergency required it.
3. Much more energy is produced.

Question # 9

Describe the principle of operation of solid state detector.

Ans 1: The principle of operation of solid state detector is based upon the production of electron-hole pair to cause a pulse of current.

Question # 10

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.

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

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

What is the function of control rods in nuclear reactor?

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

Write names of hydrogen isotopes.

How energy released when 1 amu converted into energy?

Define background radiations.What are their sources?

What are isotopes?What do you have in common?

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

Describe the principle of operation of solid state detector.

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

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

What is the function of control rods in nuclear reactor?

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

Write names of hydrogen isotopes.

How energy released when 1 amu converted into energy?

Define background radiations.What are their sources?

What are isotopes?What do you have in common?

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

Describe the principle of operation of solid state detector.

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

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

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

What do you know about Radioactivity?

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

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

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

What do you mean by quark?

Define background radiations.What are their sources?

Define absorbed dose and Gray.

Write names of hydrogen isotopes.

Briefly describe the term radiography.

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

Define fission and fusion reaction.

Describe the principle of operation of solid state detector.

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

Differentiate between controlled and uncontrolled reaction.

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

Write name of different quarks.

Distinguished between nuclear fission and nuclear fusion.

Define Half line and discuss its dependence.

Protons and neutron are formed by what types of quarks?

Define decay constant.

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

What do you mean by critical mass and critical volume?

What is self-quenching in Geiger Muller Counter?

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

If nucleus has a life of one year,does this mean that it will be completely decayed after two years?

Write names of hydrogen isotopes.

Why are heavy nuclei unstable?

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

What do you mean by quark?

Define fission and fusion reaction.

How energy released when 1 amu converted into energy?

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

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

How energy released when 1 amu converted into energy?

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

What are isotopes?What do you have in common?

What is self-quenching in Geiger Muller Counter?

Differentiate between controlled and uncontrolled reaction.

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

12th Class Physics
Short Questions Preparation