Tag: physics

Questions Related to physics

A hydrogen bomb is a

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. controlled nuclear fission

  2. uncontrolled nuclear fission

  3. uncontrolled nuclear fussion

  4. controlled nuclear fussion

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Correct Option: C

Which of the following will produce lesser pollution problems?

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  1. Nuclear fission

  2. Nuclear fusion

  3. Both will produce the same amount of pollution

  4. Nothing can be decided

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Correct Option: B

The fusion reactions occur at

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. low pressures

  2. high temperature

  3. extremely high temperature

  4. high temperature and low pressures

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Correct Option: C

Which of the following isotopes of Uranium is unstable?

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  1. U-234

  2. U-235

  3. U-238

  4. All the above

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Correct Option: B

An atom bomb is based on the principle of.

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. nuclear fission

  2. nuclear fusion

  3. the liquid drop model

  4. none of these

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Correct Option: A

The process by which the percentage of U-235 in U-238 is increased, is called

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  1. fission

  2. fusion

  3. chain reaction

  4. enrichment

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Correct Option: D

The energy released due to loss in mass during the process of nuclear fission and fusion is called:

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. hydro energy

  2. electrical energy

  3. nuclear energy

  4. geothermal energy

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Correct Option: C
Explanation:

The energy released due to a loss in mass during the process of nuclear fission and fusion is called nuclear energy. In both these processes, the loss in mass gets converted into energy in accordance with Einstein's mass-energy relation $E=mc^2$.

The most common fuel for a fission reaction in a nuclear reactor is:

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  1. Uranium $230$

  2. Uranium $238$

  3. Californium $238$

  4. Thorium $234$

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Correct Option: B
Explanation:

Uranium $238$ is used in nuclear reactor for fission reaction.

Energy produced in nuclear power plants is example of:

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. controlled nuclear fission.

  2. uncontrolled nuclear fission.

  3. controlled nuclear fusion.

  4. uncontrolled nuclear fusion.

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Correct Option: A
Explanation:

Nuclear fission carried out in a nuclear power plant is a controlled chain reaction which can be controlled to stop if required.

What is the biggest advantage of nuclear energy?

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  1. It is clean.

  2. Huge amount of energy is produced.

  3. The radioactive emissions from a nuclear power plant are healthy.

  4. Nuclear power plant can be easily set up in urban areas.

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Correct Option: B
Explanation:

The yield of nuclear energy is enormous and hence it has extraordinary potential as an energy source.