Explain the principle and working of Nuclear Reactor with the help of labelled diagram. If one microgram of U 92 235 is completely destroyed in an atom bomb, how much energy will be released?

NUCLEAR REACTOR: A nuclear reactor is a device to produces nuclear energy based on controlled nuclear chain reaction. Principle of nuclear reactor: It works on the principle of achieving a controlled chain reaction of Uranium enriched with U 235 and as a result generating huge amount of energy. The chain reaction is controlled by slowing down the fission neutrons to thermal neutrons by using a moderator. The reaction rate is maintained by controlled rods that can absorb neutrons Working: 1. Neutron induced fission releases energy plus extra fast neutrons. 2. Fast neutrons are slowed down by a “moderator” such as water or graphite, allowing chain reaction to occur. 3. Chain reaction is controlled by controlling the condition of the moderator, or by use of neutron absorbing materials (e.g. cadmium control rods) 4. Heat is removed by some form of heat exchanger where it is used to run a heat engine. Given the amount of uranium destroyed= 1 μgm = 10 - 9 kg . Complete destruction of this mass will emit energy as given by the Einstein's mass energy relation i.e E = m c 2 , where m = mass, and c = velocity of light = 3 × 10 8 m s - 1 Substituting the given values, we have Energy released= E = 1 × 10 - 9 × 3 × 10 8 2 = 9 × 10 7 J

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Tsar bomba which was detonated over the Arctic ocean is a thermonuclear hydrogen bomb.

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Important Questions on Nuclear Physics

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Draw the diagram of a nuclear power reactor and label the following part.

Radiation shield.

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Write any four differences between nuclear fusion and nuclear fission.

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Uranium is used to obtain:

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Explain the principle and working of Nuclear Reactor with the help of labelled diagram.

If one microgram of ${}_{92}^{235}U$ is completely destroyed in an atom bomb, how much energy will be released?

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

What kind of nuclear reaction produces energy in a nuclear reactor?

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Briefly describe the working of a nuclear reactor.

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of a nuclear reactor and write the function of each part.

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

List any three differences between nuclear fission reaction and nuclear fusion reaction.

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

A nuclear fuel rod generates energy at a rate of

5 \times 10^{8} W m^{- 3} .

It is in the shape of a cylinder of radius

4.0 mm

and length

0.20 m .

A coolant of specific heat

4 \times 10^{3} J {kg}^{- 1} K^{- 1}

flows, past it at a rate of,

0.2 kg s^{- 1}

. The temperature rise in this coolant is approximately,

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Write the name of two elements used as nuclear energy.

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Write a short note on: Nuclear Energy

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

The amount of material that releases

4.5 \times 10^{14} J

of energy when it is completely converted into energy during a nuclear reaction. [Given speed of light =

3 \times 10^{8} m / s

]

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

In which place of Gujarat, the nuclear power reactor is situated?

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of the nuclear reactor.

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Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

The energy of the fast neutrons emitted in a nuclear fission reactor is approximately _____

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Reactions

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

Tsar bomba which was detonated over the Arctic ocean is a thermonuclear hydrogen bomb.

Important Questions on Nuclear Physics

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