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A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :
  • a)
    the helium nucleus has less momentum than the thorium nucleus
  • b)
    the helium nucleus has more momentum than the thorium nucleus
  • c)
    the helium nucleus has less kinetic energy than the thorium nucleus
  • d)
    the helium nucleus has more kinetic energy than the thorium nucleus
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A nucleus of uranium decays at rest into nuclei of thorium and helium....
In an explosion a body breaks up into two pieces of unequal masses both part will have numerically equal momentum and lighter part will have more velocity.
U → Th + He
sinc mHe is less so KEHe will be more.
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Community Answer
A nucleus of uranium decays at rest into nuclei of thorium and helium....
Explanation:

Decay Process:
- In the decay process, a uranium nucleus at rest decays into nuclei of thorium and helium.
- This decay process involves the conservation of both momentum and energy.

Momentum and Kinetic Energy:
- When a uranium nucleus decays into thorium and helium, the total momentum of the system is conserved.
- The helium nucleus, being lighter than the thorium nucleus, will have a higher velocity and therefore more momentum.
- Since kinetic energy is directly proportional to the square of velocity, the helium nucleus will also have more kinetic energy than the thorium nucleus.

Conclusion:
- Therefore, the helium nucleus will have more kinetic energy than the thorium nucleus after the decay process.

Correct Answer:
- Option 'D': the helium nucleus has more kinetic energy than the thorium nucleus.
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A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :a)the helium nucleus has less momentum than the thorium nucleusb)the helium nucleus has more momentum than the thorium nucleusc)the helium nucleus has less kinetic energy than the thorium nucleusd)the helium nucleus has more kinetic energy than the thorium nucleusCorrect answer is option 'D'. Can you explain this answer?
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A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :a)the helium nucleus has less momentum than the thorium nucleusb)the helium nucleus has more momentum than the thorium nucleusc)the helium nucleus has less kinetic energy than the thorium nucleusd)the helium nucleus has more kinetic energy than the thorium nucleusCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :a)the helium nucleus has less momentum than the thorium nucleusb)the helium nucleus has more momentum than the thorium nucleusc)the helium nucleus has less kinetic energy than the thorium nucleusd)the helium nucleus has more kinetic energy than the thorium nucleusCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :a)the helium nucleus has less momentum than the thorium nucleusb)the helium nucleus has more momentum than the thorium nucleusc)the helium nucleus has less kinetic energy than the thorium nucleusd)the helium nucleus has more kinetic energy than the thorium nucleusCorrect answer is option 'D'. Can you explain this answer?.
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