ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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 # 2

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 # 3

Name the basic forces of nature.

Ans 1: The basic forces of nature are
1. Gravitational force
2. Electromagnetic force
3. Weak nuclear force
4. Strong nuclear force

Question # 4

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

Ans 1: Since
absorbed dose=D=energy/mass
energy=D * Mass
since the mass of whole body is much greater than mass of the hand,therefore 1 Gy dose given to the entire body deposit more energy.

Question # 5

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 # 6

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 # 7

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 # 8

Define fission and fusion reaction.

Ans 1: Fission: 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.
Ans 2: Fusion: A reaction in which two light of nuclei merge to form a heavy nucleus is called fusion reaction.It requires very high temperature.

Question # 9

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 # 10

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.

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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

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

Briefly describe the term radiography.

Name the basic forces of nature.

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 background radiations.What are their sources?

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

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

Define fission and fusion reaction.

Why are heavy nuclei unstable?

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

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

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

Briefly describe the term radiography.

Name the basic forces of nature.

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 background radiations.What are their sources?

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

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

Define fission and fusion reaction.

Why are heavy nuclei unstable?

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

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

What are isotopes?What do you have in common?

Define absorbed dose and Gray.

Differentiate between Baryons and Mesons.

Define background radiations.What are their sources?

Define Hadrons and Leptons.

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

Distinguished between nuclear fission and nuclear fusion.

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

How energy released when 1 amu converted into energy?

Why moderators are used in the core of nuclear reactor?

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

Describe the principle of operation of solid state detector?

What do you mean by critical mass and critical volume?

Write names of hydrogen isotopes.

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

Differentiate between controlled and uncontrolled reaction.

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

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

Differentiate between Baryons and Mesons.

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

Briefly describe the term radiography.

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

Write names of hydrogen isotopes.

Name the basic forces of nature.

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

Protons and neutron are formed by what types of quarks?

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

What is radioactivity decay?Give an example.

Distinguished between nuclear fission and nuclear fusion.

How can radioactivity help in the treatment of cancer?

What is self-quenching in Geiger Muller Counter?

Why are heavy nuclei unstable?

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

Define decay constant.

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

Wh Geiger counter is not suitable for fast counting?

Name the basic forces of nature.

Define Hadrons and Leptons.

How can radioactivity help in the treatment of cancer?

State two characteristics of beta particle.

12th Class Physics
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