ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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

Ans 1: As alpha and beta are electrically charged particle,so they can cause ionization without hitting an atom either by,repellings the electron of target particle.

Question # 2

Wh Geiger counter is not suitable for fast counting?

Ans 1: Geiger counter is not suitable for fast counting because of its longer dead time.The positive ions take several time as long to reach the outer cathode,because positive ions are very massive than the electrons.During this time further incoming particle can not be counted,This time is called as the dead time of counter which delays fast counting system.

Question # 3

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 # 4

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 # 5

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 # 6

Protons and neutron are formed by what types of quarks?

Ans 1: Protons is formed by two up and one down quarks.Neutron is formed by two down and one up quarks.

Question # 7

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 # 8

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 # 9

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 # 10

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.

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

Wh Geiger counter is not suitable for fast counting?

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

Differentiate between controlled and uncontrolled reaction.

Describe the principle of operation of solid state detector.

Protons and neutron are formed by what types of quarks?

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

Briefly describe the term radiography.

How energy released when 1 amu converted into energy?

What is the function of control rods in 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 alpha and beta may ionize an atom without directly hitting the electrons?

Wh Geiger counter is not suitable for fast counting?

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

Differentiate between controlled and uncontrolled reaction.

Describe the principle of operation of solid state detector.

Protons and neutron are formed by what types of quarks?

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

Briefly describe the term radiography.

How energy released when 1 amu converted into energy?

What is the function of control rods in nuclear reactor?

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

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 is radioactivity decay?Give an example.

Briefly describe the term radiography.

Define fission and fusion reaction.

What is half line?

Name the basic forces of nature.

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

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

What do you mean by critical mass and critical volume?

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

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

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

Define Half line and discuss its dependence.

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

What are thermal reactors?

Define fission and fusion reaction.

What do you mean by critical mass and critical volume?

State two characteristics of beta particle.

What is self-quenching in Geiger Muller Counter?

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

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

Protons and neutron are formed by what types of quarks?

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

Describe the principle of operation of solid state detector.

What do you know about Radioactivity?

Define decay constant.

Write names of hydrogen isotopes.

How energy released when 1 amu converted into energy?

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

What are isotopes?What do you have in common?

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

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

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.

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

Describe the principle of operation of solid state detector?

Define decay constant.

Define Half line and discuss its dependence.

What do you know about Radioactivity?

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