The source of the Sun’s energy is the process of (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

The source of the Sun’s energy is the process of (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission
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Nuclear fusion
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The source of the sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Description : The source of the sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Last Answer : (3) Nuclear fusion Explanation: The Sun formed about 4.6 billion years ago from the gravitational collapse of a region within a large molecular cloud. Most of the matter gathered in the center, ... thermonuclear fusion in its core. It is thought that almost all other stars form by this process.

The source of the Sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Description : The source of the Sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Last Answer : (3) Nuclear fusion Explanation: Nuclear fusion is a nuclear reaction in which two or more atomic nuclei join together, or "fuse", to form a single heavier nucleus. During this process, matter ... fusing nuclei is converted to energy which is released. Fusion is the process that powers active stars.

The phenomenon of nuclear fission is opposite to that of (A) Radioactive decay (B) Thermionic emission (C) Nuclear fusion (D) Combustion

Description : The phenomenon of nuclear fission is opposite to that of (A) Radioactive decay (B) Thermionic emission (C) Nuclear fusion (D) Combustion

Last Answer : (C) Nuclear fusion

The method used to produce electron emission in most vacuum tubes is known as ____________. A. photoelectric emission B. secondary electric emission C. cold cathodic electric emission D. thermionic emission

Description : The method used to produce electron emission in most vacuum tubes is known as ____________. A. photoelectric emission B. secondary electric emission C. cold cathodic electric emission D. thermionic emission

Last Answer : Answer: D

Name the process of production of energy in the Sun – (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Description : Name the process of production of energy in the Sun – (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Last Answer : (3) Nuclear fusion Explanation: The source of the sun's fuel is hydrogen and helium gases. Through a special chemical reaction, called nuclear fusion, the hydrogen gas is "burned" releasing an enormous amount of energy in the form of light and heat.

What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission

Description : What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission

Last Answer : ANSWER: Y -- NUCLEAR FUSION

Name the process of production of energy in the Sun (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Description : Name the process of production of energy in the Sun (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Last Answer : Nuclear fusion

Plutonium Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Description : Plutonium Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Last Answer : ANSWER: A

Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Description : Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Last Answer : ANSWER: A

Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Description : Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Last Answer : ANSWER: A

Pick out the wrong statement. (A) Geothermal energy is a non-conventional source of energy (B) Mass is converted into energy in both nuclear fission & fusion reaction (C) Inhalation of mercury vapour is not harmful for human beings (D) Inhalation of arsenic causes cancer

Description : Pick out the wrong statement. (A) Geothermal energy is a non-conventional source of energy (B) Mass is converted into energy in both nuclear fission & fusion reaction (C) Inhalation of mercury vapour is not harmful for human beings (D) Inhalation of arsenic causes cancer

Last Answer : (C) Inhalation of mercury vapour is not harmful for human beings

Which of the following reaction is the main cause of energy radiated from Sun? (1) Nuclear fission (2) Nuclear fusion (3) Chemical reaction (4) Diffusion reaction

Description : Which of the following reaction is the main cause of energy radiated from Sun? (1) Nuclear fission (2) Nuclear fusion (3) Chemical reaction (4) Diffusion reaction

Last Answer : (2) Nuclear fusion Explanation: The Sun is a main-sequence star, and thus generates its energy bynuclear fusion of hydrogen nuclei into helium. In its core, the Sunfuses 620 million metric tons of hydrogen each second.

The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Description : The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Last Answer : (3) Nuclear fusion Explanation: The spectrum of the Sun's solar radiation is close to that of a black body with a temperature of about 5,800 K. The Sun emits Electromagnetic radiation across ... converted to lower energy photons before they reach the Sun's surface and are emitted out into space.

Energy is continuously created in the sun due to – (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Description : Energy is continuously created in the sun due to – (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Last Answer : (1) nuclear fusion Explanation: The central mass of the sun becomes increasingly hot and dense. eventually initiating thermonuclear fusion in its core. It is thought that almost all other stars form ... because some of the mass of the fusing nuclei is converted to energy which is released.

The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Description : The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Last Answer : Nuclear fusion

Energy is continuously created in the sun due to: (1) nuclear fusion (2) nuclear fission (3) radioactivity (4) artificial radioactivity

Description : Energy is continuously created in the sun due to: (1) nuclear fusion (2) nuclear fission (3) radioactivity (4) artificial radioactivity

Last Answer : nuclear fusion

The process, whereby electrons gain sufficient energy to be released from the surface of a thin, heated metal plate, is known as _____________. A. photo electric emission B. secondary emission C. thermionic emission D. regressive emission

Description : The process, whereby electrons gain sufficient energy to be released from the surface of a thin, heated metal plate, is known as _____________. A. photo electric emission B. secondary emission C. thermionic emission D. regressive emission

Last Answer : Answer: C

Quartz crystal in quartz watches work on the principle called? A. Photoelectric effect B. Stark effect C. Thermionic effect D. Piezo-electric effect (Answer) E. None of these

Description : Quartz crystal in quartz watches work on the principle called? A. Photoelectric effect B. Stark effect C. Thermionic effect D. Piezo-electric effect (Answer) E. None of these

Last Answer : D. Piezo-electric effect (Answer)

Hydrogen bomb is based on the principle of - (1) Double decomposition (2) Artificial radioactivity (3) Nuclear fission (4) Nuclear fusion

Description : Hydrogen bomb is based on the principle of - (1) Double decomposition (2) Artificial radioactivity (3) Nuclear fission (4) Nuclear fusion

Last Answer : (4) Nuclear fusion Explanation: Hydrogen Bomb is based on the principle of Nuclear Fusion. Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

Nuclear reactors used to produce electricity are based on – (1) Nuclear fission (2) Nuclear fusion (3) Cold fusion (4) Superconductivity

Description : Nuclear reactors used to produce electricity are based on – (1) Nuclear fission (2) Nuclear fusion (3) Cold fusion (4) Superconductivity

Last Answer : (1) Nuclear fission Explanation: A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are used for generating electricity and for the propulsion ... (water or gas), which runs through turbines that power either ship's propellers or generators.

Nuclear reactors used to produce electricity are based on (1) nuclear fission (2) nuclear fusion (3) cold fusion (4) superconductivity

Description : Nuclear reactors used to produce electricity are based on (1) nuclear fission (2) nuclear fusion (3) cold fusion (4) superconductivity

Last Answer : nuclear fission

The basic process taking place in nuclear reactors is - (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Description : The basic process taking place in nuclear reactors is - (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Last Answer : (2) Fission Explanation: A nuclear reactor produces and controls the re-lease of energy from splitting the atoms of uranium, known as nuclear fission. When a fissile atomic nucleus such as uranium235 ... process produces free neutrons and gamma pho-tons, and releases a very large amount of energy.

The basic process taking place in nuclear reactors is (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Description : The basic process taking place in nuclear reactors is (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Last Answer : Fission

A nuclear reactor harnesses nuclear energy by A. Nuclear fusion B. Spontaneous fission C. Uncontrolled chain reaction D. Controlled chain reaction

Description : A nuclear reactor harnesses nuclear energy by A. Nuclear fusion B. Spontaneous fission C. Uncontrolled chain reaction D. Controlled chain reaction

Last Answer : ANSWER: D

The escape velocity from the earth’s surface is about 1. 30 km/sec 2. 6 km/sec 3. 11.2 km/sec 4. 300 km/sec 15. The radiant energy of the sun is due to (a) Nuclear fission (b) Nuclear fusion (c) Sinking of the sun (d) Violent explosions

Description : The escape velocity from the earth’s surface is about 1. 30 km/sec 2. 6 km/sec 3. 11.2 km/sec 4. 300 km/sec 15. The radiant energy of the sun is due to (a) Nuclear fission (b) Nuclear fusion (c) Sinking of the sun (d) Violent explosions

Last Answer : Ans:(c)

Energy is continuously generated in the sun due to _______. (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Description : Energy is continuously generated in the sun due to _______. (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Last Answer : (1) Nuclear fusion Explanation: Nuclear fusion is a nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a new type of atomic nucleus.

The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Description : The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Last Answer : (4) nuclear fusion Explanation: The Sun is a main-sequence star, and thus generates its energy by nuclear fusion of hydrogen nuclei into helium. Nuclear fusion is a nuclear reaction in which two ... the fusing nuclei is converted to photons which are released through a cycle that even our sun uses.

Differentiate between any five of the following: a) Thermoplastics and thermosetting plastics b) Lunar eclipse and solar eclipse c) Asteroid and meteorite d) Renewable and non-renewable energy resources e) Endothermic and exothermic reactions f) Star and planet g) Nuclear fission and nuclear fusion

Description : Differentiate between any five of the following: a) Thermoplastics and thermosetting plastics b) Lunar eclipse and solar eclipse c) Asteroid and meteorite d) Renewable and non-renewable energy resources e) Endothermic and exothermic reactions f) Star and planet g) Nuclear fission and nuclear fusion

Last Answer : a) Thermoplastics and thermosetting plastics: Thermoplastics: Thermoplastics can be repeatedly softened by heating and hardened by cooling.Thermoplastic molecules, which are linear or slightly branched, do ... or explode in midair. Remains of meteoroids that reach the surface are called meteorites.

The Sun produces most of its energy by-------? A. Nuclear fusion (Answer) B. nuclear fission C. Burning hydrogen D. None of these

Description : The Sun produces most of its energy by-------? A. Nuclear fusion (Answer) B. nuclear fission C. Burning hydrogen D. None of these

Last Answer : A. Nuclear fusion (Answer)

Which of the following energy technologies is not utilized for power generation today? w) Nuclear Fission x) Solar Ponds y) Geothermal Power z) Nuclear Fusion

Description : Which of the following energy technologies is not utilized for power generation today? w) Nuclear Fission x) Solar Ponds y) Geothermal Power z) Nuclear Fusion

Last Answer : ANSWER: Z -- NUCLEAR FUSION

The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Description : The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Last Answer : nuclear fusion

The reverse effect of X-ray emission is (1) Raman effect (2) Compton effect (3) Zeeman effect (4) Photoelectric

Description : The reverse effect of X-ray emission is (1) Raman effect (2) Compton effect (3) Zeeman effect (4) Photoelectric

Last Answer : (4) Photoelectric Explanation: When fast moving electrons strike on high atomic weight substance, X - ray is produced. In contrast, Photoelectric effect takes place when radiation of sufficient frequency ... and electrons are emitted. Hence, X ray is the inverse phenomenon of photoelectric effect.

The reverse effect of X–ray emission is (1) Raman effect (2) Compton effect (3) Zeeman effect (4) Photoelectric

Description : The reverse effect of X–ray emission is (1) Raman effect (2) Compton effect (3) Zeeman effect (4) Photoelectric

Last Answer : Photoelectric

What are the differences between thermionic emission and evaporation?

Description : What are the differences between thermionic emission and evaporation?

Last Answer : Thermionic emission occurs when electron leaves the surface of metals while evaporation occur in liquid when strong electron gain energy and escape the liquid surface in gaseous form

The basic operating principle of a transformer is attributed to ______________. A. electromagnetic induction B. variance of a conductor in a magnetic field C. mutual reaction D. thermionic emission

Description : The basic operating principle of a transformer is attributed to ______________. A. electromagnetic induction B. variance of a conductor in a magnetic field C. mutual reaction D. thermionic emission

Last Answer : Answer: A

Define Thermionic emission.

Description : Define Thermionic emission.

Last Answer : The process by which free electrons are emitted from the surface of a metal when external heat energy is applied is called thermionic emission. Thermionic emission occurs in metals that are heated to a very ... of external energy in the form of heat is supplied to the free electrons in the metals.

List any two applications of thermionic emission.

Description : List any two applications of thermionic emission.

Last Answer : 1. The components which are made by the process of thermionic emission are used in the electronic devices such as cathode ray tube, radio etc.  2. Thermionic emission are used in a ... , power electronics, x-ray generation, and energy converters from high-temperature sources and solar energy.

Thermionic emission occurs in?

Last Answer : Thermionic emission occurs in vacuum tubes.

The main purpose of control rod in a nuclear reactor is to control the (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission (B) Emission of hazardous radiation (C) Conversion of fissile material into fertile material (D) Velocity of the secondary neutrons

Description : The main purpose of control rod in a nuclear reactor is to control the (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission (B) ... radiation (C) Conversion of fissile material into fertile material (D) Velocity of the secondary neutrons

Last Answer : (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission

The source of enormous energy of sun is a)Fusion of hydrogen to form helium b)Fission of uranium c)Fusion of deuterium and tritium d)Fusion to tritium

Description : The source of enormous energy of sun is a)Fusion of hydrogen to form helium b)Fission of uranium c)Fusion of deuterium and tritium d)Fusion to tritium

Last Answer : The source of enormous energy of sun is a)Fusion of hydrogen to form helium b)Fission of uranium ... and tritium D. fission of tritium to form helium

How is nuclear fission and fusion used in weapons?

Description : How is nuclear fission and fusion used in weapons?

Last Answer : Nuclear fission is used in nuclear weapons to create what somemight call an atomic blast (nuclear blast). Nuclear fission usedthis way can also be applied in special complex designs to generateenough thermal energy (heat) to initiate a fusion reaction. Thiscreates an even bigger nuclear blast.

How are fission and nuclear fusion similar?

Description : How are fission and nuclear fusion similar?

Last Answer : They are both nuclear reactions. That's just about it. Other than that they are completely different. Fission is the nuclear reaction when two atoms smash the living soul out of each other ... together into another compound/element, while releasing about 10 times as much energy as nuclear fission.

Hydrogen bomb is based upon the principle of ______. (1) Nuclear fission (2) Nuclear fusion (3) Controller nuclear reaction (4) None of these

Description : Hydrogen bomb is based upon the principle of ______. (1) Nuclear fission (2) Nuclear fusion (3) Controller nuclear reaction (4) None of these

Last Answer : (2) Nuclear fusion Explanation: The hydrogen bomb eventually relies upon atomic fusion (adding to the atomic nucleus) to release energy. Nuclear fusion is a nuclear reaction in which two or more atomic nuclei ... and then collide at a very high speed and join to form a new type of atomic nucleus.

The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.

The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.

An atomic pile is used for – (1) producing X-rays (2) conducting nuclear fission (3) coducting thermonuclear fusion (4) accelerating atoms

Description : An atomic pile is used for – (1) producing X-rays (2) conducting nuclear fission (3) coducting thermonuclear fusion (4) accelerating atoms

Last Answer : (2) conducting nuclear fission Explanation: An atomic pile is a nuclear reactor that uses controlled nuclear fission to generate energy. The most common reactor consists of a large assembly of graphite (an allotropic form of carbon) blocks having rods of uranium metal (fuel).

Heat is generated in a nuclear reactor (thermal) by (A) Combustion of a nuclear fuel e.g. uranium (B) Fusion of atoms of uranium (C) Absorption of neutrons in uranium atoms (D) Fission of U-235 by neutrons

Description : Heat is generated in a nuclear reactor (thermal) by (A) Combustion of a nuclear fuel e.g. uranium (B) Fusion of atoms of uranium (C) Absorption of neutrons in uranium atoms (D) Fission of U-235 by neutrons

Last Answer : (D) Fission of U-235 by neutrons

Artificially produced radioactive isotopes are used for (A) Power generation (B) Treatment of certain diseases (C) Initiating nuclear fission and fusion (D) All (A), (B) and (C)

Description : Artificially produced radioactive isotopes are used for (A) Power generation (B) Treatment of certain diseases (C) Initiating nuclear fission and fusion (D) All (A), (B) and (C)

Last Answer : (B) Treatment of certain diseases

Mention the differences between nuclear fission and nuclear fusion.

Description : Mention the differences between nuclear fission and nuclear fusion.

Last Answer : Nuclear Fission 1. A heavy nucleus splits into two lighter nuclei with liberation of energy 2. It can be controlled. 3. It does not require high temperature. 4. It causes radiation pollution due ... the products are not radio active. 5. The energy produced is much more than that of fission.

In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ? A. Chemical Reaction B. Nuclear reaction C. Fission nuclear reaction D. Fusion nuclear reaction (Answer) E. None of these

Description : In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear ... reaction C. Fission nuclear reaction D. Fusion nuclear reaction (Answer) E. None of these

Last Answer : D. Fusion nuclear reaction (Answer)